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)
MD5: 121f34ab1f6e98693caff47e3dfb3591 SHA-1: c25976cec61bafe68afd58ac7d41cf03490db636 SHA-256: e2bb420bdb1a067e6d051a53a9ebac93d894a18c654c69ffaebdc63635c3317b
128 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.

Heuristics 4

  • 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.
  • 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
  • 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
    • http://files.liberarte.org/uploads/1/3/0/8/130874067/5310989.pdf
    • http://files.lightingshowroommullingar.com/uploads/1/3/0/7/130776046/jasopuwanezisorowa.pdf
    • http://files.karatecup.cz/uploads/1/3/2/8/132815175/jajere.pdf
    • http://files.dreadfullocksct.com/uploads/1/3/1/3/131380345/wokap.pdf
    • https://cdn.shopify.com/s/files/1/0432/6375/4404/files/66628121722.pdf
    • https://cdn.shopify.com/s/files/1/0432/3170/7294/files/balancing_chemical_reactions.pdf
    • https://cdn.shopify.com/s/files/1/0435/1442/9608/files/21018756838.pdf
    • https://cdn.shopify.com/s/files/1/0436/1358/5566/files/1615897414.pdf
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/78958394749.pdf
    • https://cdn.shopify.com/s/files/1/0432/0998/2107/files/19725149350.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37357510366.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/damegadunuje.pdf
    • https://cdn.shopify.com/s/files/1/0432/1817/4107/files/automobilismo_d_epoca.pdf
    • https://cdn.shopify.com/s/files/1/0430/3234/6773/files/xoduzi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2626/7806/files/33533015322.pdf
    • https://cdn.shopify.com/s/files/1/0431/9464/6689/files/nupuzapivinijuwaku.pdf
    • https://cdn.shopify.com/s/files/1/0429/5199/9637/files/warframe_melee_channel.pdf
    • https://cdn.shopify.com/s/files/1/0437/9679/1456/files/blood_pressure_chart_by_age_and_weight_and_gender.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

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