Malicious PDF — malware analysis report

Static analysis result for SHA-256 32232f6b7fd69c97…

MALICIOUS

PDF

42.3 KB Created: 2020-08-06 21:13:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 21ab0eb1a6bd47ecb50c1b0a2460fa77 SHA-1: fc75552fc793c5607a1d90befcb28f93e85b33da SHA-256: 32232f6b7fd69c97fc0c4b44cc4cf87e02b83e3c9b80d2841bf733eb841fcc35
154 Risk Score

Malware Insights

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

The PDF contains a deceptive link disguised as a free download for "Edgar Allan Poe short stories pdf free download". This link redirects to a known malicious redirector, ttraff.cc, which likely serves as a gateway to further malicious content or exploits. The presence of a large number of external PDF links, many pointing to Shopify domains, suggests a link farm or SEO manipulation tactic to increase visibility and traffic to the malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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=edgar+allan+poe+short+stories+pdf+free+download
    • http://files.whitlinghamcharitabletrust.com/uploads/1/3/0/7/130775978/8313741.pdf
    • http://files.transformationalastrologyandtarot.com/uploads/1/3/1/4/131453302/5357160.pdf
    • http://files.kenoshaforgottenfriends.org/uploads/1/3/1/6/131636969/ee6bc3d.pdf
    • http://files.savannahsturm.com/uploads/1/3/1/6/131636775/609369.pdf
    • http://files.mtvinyl.com/uploads/1/3/2/6/132681740/dc87025c.pdf
    • https://cdn.shopify.com/s/files/1/0431/3271/5163/files/sadatoboso.pdf
    • https://cdn.shopify.com/s/files/1/0434/2258/0886/files/29908786700.pdf
    • https://cdn.shopify.com/s/files/1/0438/3349/1613/files/pdf_file_size_reduce_below_2_mb.pdf
    • https://cdn.shopify.com/s/files/1/0438/4364/9698/files/guzexoli.pdf
    • https://cdn.shopify.com/s/files/1/0434/3624/5142/files/pimutebaxapatin.pdf
    • https://cdn.shopify.com/s/files/1/0433/2997/8526/files/lagelabupuza.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lipowu.pdf
    • https://cdn.shopify.com/s/files/1/0427/6181/4172/files/kajezamojezu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4456/9242/files/43369755022.pdf
    • https://cdn.shopify.com/s/files/1/0428/3518/1734/files/16845634465.pdf
    • https://cdn.shopify.com/s/files/1/0430/8071/2346/files/advantages_of_vlsi_technology.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_off00006647.bin
98ebd6e12d9f2f1b12832dc654c4d553f845f7cc0085811fbf435fec56679ab7
pdf-font-stream PDF embedded font (sfnt) at offset 0x6647 5352 bytes
font_01_sfnt_off0000788a.bin
c65ab0f8a2479b7951825f3bb0c34f8c69301aac7f3d857577e8c788a156ef7a
pdf-font-stream PDF embedded font (sfnt) at offset 0x788A 10444 bytes