Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2bb420bdb1a067e…

MALICIOUS

PDF

44.1 KB Created: 2020-08-06 23:54:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 121f34ab1f6e98693caff47e3dfb3591 SHA-1: c25976cec61bafe68afd58ac7d41cf03490db636 SHA-256: e2bb420bdb1a067e6d051a53a9ebac93d894a18c654c69ffaebdc63635c3317b
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a significant number of embedded links, many pointing to Shopify domains, but one critical link redirects through ttraff.cc, a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'ap stylebook pdf 2020 free download' and the redirector URL, suggesting a lure for users seeking this content. The presence of a visual download button heuristic further supports the deceptive nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=ap+stylebook+pdf+2020+free+download In PDF document text
    • http://files.liberarte.org/uploads/1/3/0/8/130874067/5310989.pdfIn PDF document text
    • http://files.lightingshowroommullingar.com/uploads/1/3/0/7/130776046/jasopuwanezisorowa.pdfIn PDF document text
    • http://files.karatecup.cz/uploads/1/3/2/8/132815175/jajere.pdfIn PDF document text
    • http://files.dreadfullocksct.com/uploads/1/3/1/3/131380345/wokap.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/1/0432/6375/4404/files/66628121722.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3170/7294/files/balancing_chemical_reactions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1442/9608/files/21018756838.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1358/5566/files/1615897414.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/78958394749.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0998/2107/files/19725149350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37357510366.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/damegadunuje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1817/4107/files/automobilismo_d_epoca.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3234/6773/files/xoduzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2626/7806/files/33533015322.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9464/6689/files/nupuzapivinijuwaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5199/9637/files/warframe_melee_channel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9679/1456/files/blood_pressure_chart_by_age_and_weight_and_gender.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ca8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CA8 5696 bytes
SHA-256: 0d004de2d1c73af13a598b88459c54071d443ec3fef795308d1714d30f87a3ca
font_01_sfnt_off00008032.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8032 10428 bytes
SHA-256: 537de40102c42500f612700586f2af01f04a8c41b6828a9d2934d01fb5778f8c