Malicious PDF — malware analysis report

Static analysis result for SHA-256 39a004b0d63bda8b…

MALICIOUS

PDF

65.3 KB Created: 2020-08-02 21:21:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 503f3fb81467bd75444be84a7bd87196 SHA-1: b5437f17a9f95636a17ffb381276ebd28557ec46 SHA-256: 39a004b0d63bda8b8e53afbd7bf4b4df3d348517afe5093b3561eef65cc1d37a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating malicious redirection and a link farm, specifically pointing to a "Becker CPA Review" lure. The embedded link `https://ttraff.cc/pify?keyword=becker+cpa+review` is identified as a malicious redirector. The document body, though heavily obfuscated, contains the same lure text and the malicious URL, suggesting an attempt to trick users into clicking through to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=becker+cpa+review In PDF document text
    • http://files.labradorpuppyforsale.com/uploads/1/3/0/8/130813132/simitepikuta.pdfIn PDF document text
    • http://files.cramerclass.com/uploads/1/3/0/7/130739128/fosasebizowumila.pdfIn PDF document text
    • http://files.tristaricelandics.com/uploads/1/3/0/8/130813416/675674.pdfIn PDF document text
    • http://files.globetrotterscience.com/uploads/1/3/0/8/130874284/90f1224905a8b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/95126128964.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1715/9335/files/26383447814.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4396/3548/files/71343066882.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3772/7637/files/gejigolowogegokurisibon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7016/8986/files/bilebipirulem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4877/9426/files/alvin_and_the_chipmunks_the_squeakquel_123movies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1697/7559/files/jujajaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2181/1364/files/sulalikuwirip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2146/5757/files/68327857729.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1896/9507/files/3498180552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2477/6354/files/50568127902.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0722/1661/files/avast_pro_antivirus_license_file.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000085db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85DB 6548 bytes
SHA-256: 0b1dc5b4f573a69b9afaf6921dac0d317c9c89d55a369f9988057ef6dc1e612c
font_01_sfnt_off00009630.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9630 4476 bytes
SHA-256: fa47fd24bc6bd93daa449fcc384b7d60fc86d100c5467622338bb822cdc92b4b
font_02_sfnt_off0000a573.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA573 1756 bytes
SHA-256: b7d88799324b00ec566b7e3c430f802d07920be87832eec88d398d13b793f2ba
font_03_sfnt_off0000ae2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE2D 10608 bytes
SHA-256: 8d082082c9a34085d9679db2a068f5a2b91bacdfd5cffe21e37e743baceada6f
font_04_sfnt_off0000d2b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2B9 16096 bytes
SHA-256: 3818ad609ee50c1d94dbc61f5d10731946e88c926c1c3751f72a6abad526de54
font_05_sfnt_off0000e78d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE78D 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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