Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae07ecbfcca79304…

MALICIOUS

PDF

44.7 KB Created: 2020-08-27 19:32:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ad9bc7967e6ca7035923c4606df49167 SHA-1: 1f8adc7c6b560f3e10ee3c71b5229d589f8adb98 SHA-256: ae07ecbfcca79304c8c6c024ed368780ef05f5786bcad4c76449fdb586c49ec9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains multiple embedded links, with one prominently pointing to a redirector URL associated with malicious activity. The document body, though partially obfuscated, contains text related to "driverpack offline full version", suggesting a lure for software downloads. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to improve search engine ranking for malicious content. The ML classifier also strongly flagged this PDF as malicious.

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.ru/pify?keyword=driverpack+offline+full+version In PDF document text
    • http://files.jsfarnsworth.net/uploads/1/3/0/7/130738559/b1840b95eb8c.pdfIn PDF document text
    • http://files.hinghamwomensclub.org/uploads/1/3/1/4/131437380/nereguxivo.pdfIn PDF document text
    • http://files.grimmplayers.com/uploads/1/3/0/8/130874231/dobipegodak.pdfIn PDF document text
    • http://govupano.energycyclingclub.ca/uploads/1/3/2/6/132683173/larisasenex.pdfIn PDF document text
    • http://www.opentle.orgIn 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/1/0433/5940/4197/files/sulopupefuvaxoxuwon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2616/9503/files/jukemul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71409998288.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/2192/7319/files/gutoba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5057/3719/files/81635181096.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5195/8947/files/84741407093.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6992/2714/files/poloselunowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6320/6307/files/aurelion_sol_guide_mobafire.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 4

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00006358.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x6358 11624 bytes
SHA-256: 48cc19b9956871606bdc1bec4c9b49fa40d9b0c34e917b3cc06351c67cbadc4a
font_00_sfnt_off000051d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51D0 5132 bytes
SHA-256: 0c64d32ecb3d507464178fc6d3d4712d5f69adf971ce9b988e2a0f3607d0cb2a
font_02_sfnt_off000083e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83E3 9888 bytes
SHA-256: f9e5b29d4ed1fd67a51f8877f21cb4845aaab5057c31cfc910888d16978f673d

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