Malicious PDF — malware analysis report

Static analysis result for SHA-256 b75476f6c7ea3ce6…

MALICIOUS

PDF

71.0 KB Created: 2020-08-05 11:58:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87c38b2301cc6aeabe636414fd511340 SHA-1: 609639abe98603431a713a78b090998492af08a4 SHA-256: b75476f6c7ea3ce6b6b0f85e2c1df599d8345406ec64845a88f4a429edb737ae
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain (ttraff.com), as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, appears to contain text related to 'speaking test preparation' and the malicious URL itself. The PDF_SEO_LINK_FARM heuristic also indicates the presence of numerous external links, suggesting a link farm or redirection strategy. The primary attack vector is likely social engineering via a deceptive link.

Heuristics 3

  • 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.
  • 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.com/pify?keyword=speaking+test+preparation+pack+for+cambridge+english+proficiency+pdf
    • http://files.womanite.org/uploads/1/3/1/8/131857983/1218982.pdf
    • http://files.ironbreedlemc.org/uploads/1/3/2/6/132695915/39eb5d6b1.pdf
    • http://files.shoulderandhandclinicisleofwight.com/uploads/1/3/1/3/131382470/2619978.pdf
    • http://files.michaelmoreen.com/uploads/1/3/1/4/131453451/naxafokavuwixit_zufelidil.pdf
    • http://files.askpapabear.com/uploads/1/3/0/8/130873983/vukonozuruvikapewid.pdf
    • https://cdn.shopify.com/s/files/1/0431/9870/9917/files/84087119746.pdf
    • https://cdn.shopify.com/s/files/1/0431/0374/8263/files/the_weight_of_glory_cs_lewis.pdf
    • https://cdn.shopify.com/s/files/1/0431/8747/0494/files/59574936780.pdf
    • https://cdn.shopify.com/s/files/1/0429/1949/3785/files/3248667581.pdf
    • https://cdn.shopify.com/s/files/1/0429/7634/6266/files/zijigajitetel.pdf
    • https://cdn.shopify.com/s/files/1/0428/9980/0217/files/mijemafikosotew.pdf
    • https://cdn.shopify.com/s/files/1/0436/1378/2179/files/playercorefactory_xml_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/6158/2755/files/best_minecraft_mods_1._14.pdf
    • https://cdn.shopify.com/s/files/1/0431/3071/6322/files/aashto_standard_specifications_for_highway_bridges_2020.pdf
    • https://cdn.shopify.com/s/files/1/0438/3821/0205/files/tavigewepuganopu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4952/5156/files/jorapizodopiviba.pdf
    • https://cdn.shopify.com/s/files/1/0430/3598/4029/files/44482658896.pdf
    • https://cdn.shopify.com/s/files/1/0431/7967/1718/files/jukufavurivewen.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_off0000ca70.bin
a812b42f7703d7a3e62e3dbdb85c52d54b03e0239dd6b3b52343bf3ed05a682a
pdf-font-stream PDF embedded font (sfnt) at offset 0xCA70 5980 bytes
font_01_sfnt_off0000dead.bin
c35bc4ae27cea5cd4fa3f33867f0c27aca23f6806b379bb10ac16ce3ca293a87
pdf-font-stream PDF embedded font (sfnt) at offset 0xDEAD 16564 bytes