Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f5d1f72736e1cda…

MALICIOUS

PDF

46.2 KB Created: 2020-08-12 23:10:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9c8f75d1f7cfea9c2c9b6dab0f0f70be SHA-1: 3c38440b0913e29a872afae221b34400c2b1bf78 SHA-256: 6f5d1f72736e1cda93cf775a9adbabef35df6d72ee858244e634017898e30b33
194 Risk Score

Malware Insights

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

The PDF contains multiple links pointing to redirector infrastructure, specifically designed to lure users with a "free download" pretext. The primary redirector URL is https://ttraff.cc/pify?keyword=autocad+pdf+converter+free+download, which likely leads to a malicious payload. The document body and embedded link structures strongly suggest a phishing or malware distribution attempt.

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=autocad+pdf+converter+free+download In PDF document text
    • http://kejijelev.morriltonfirstpres.com/uploads/1/3/1/0/131070374/5056571.pdfIn PDF document text
    • http://files.virginia-art.net/uploads/1/3/0/7/130739522/4a932111.pdfIn PDF document text
    • http://files.kingmanaussies.com/uploads/1/3/1/3/131379948/sudoga.pdfIn PDF document text
    • http://files.homegrownhighways.com/uploads/1/3/2/8/132814826/dodoluwidinawuba.pdfIn PDF document text
    • http://files.glenburnietow.com/uploads/1/3/1/4/131453623/detikope-gudakububoxew-bafumagis.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4405/9806/files/fivesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7122/5494/files/56551559247.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3463/0554/files/13899287487.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8911/6836/files/20928384491.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5528/3350/files/bevivinofitefato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1778/9863/files/24798971623.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6380/3046/files/61004555989.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3440/files/luzufexima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41326774972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2026/2308/files/42672051100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7679/7081/files/pipedixodufubaxuluxudiz.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
    • 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A4 5112 bytes
SHA-256: d4183d77e7738cd1c17f221ba950818538b62d83b3dc72ec232531bd5442b4b3
font_01_sfnt_off00007329.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7329 10408 bytes
SHA-256: fdc443b15334d092c7cbd7536d8f3a22cb775280911e1936de01cb5071d24f43
font_02_sfnt_off000096c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96C6 16076 bytes
SHA-256: 3088de61ba4d2b01ab234d84e40a42107c4d30a52b1b9bdaf8961d49da71d313