Malicious PDF — malware analysis report

Static analysis result for SHA-256 a91955fe5056145a…

MALICIOUS

PDF

44.5 KB Created: 2020-08-19 11:55:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49af52606564c12b42adf96954e6d701 SHA-1: 25263a91f070a27e418b9c7913ceb35782ea897e SHA-256: a91955fe5056145ad64687ad9744f2004efd333deba254b263a34292c4d421c2
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. It also exhibits a PDF link farm heuristic, with numerous links to external PDFs, many hosted on Shopify. The document body, though partially corrupted, contains the same lure text and the malicious URL. The primary intent appears to be redirecting users to malicious infrastructure.

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=princess+polly+size+guide
    • http://nurawa.rosesoma.com/uploads/1/3/2/3/132302815/6327413.pdf
    • http://files.kingwoodmusikgarten.com/uploads/1/3/0/9/130969768/823b645.pdf
    • http://files.latreiarollershades.com/uploads/1/3/1/4/131453595/aaa4ae.pdf
    • http://files.mashamparishes.org/uploads/1/3/1/3/131380723/mafum.pdf
    • https://cdn.shopify.com/s/files/1/0438/4237/1741/files/39507478587.pdf
    • https://cdn.shopify.com/s/files/1/0430/4620/7637/files/mortal_kombat_snes_controls.pdf
    • https://cdn.shopify.com/s/files/1/0434/6124/7129/files/chacon_middle_school_uniform_colors.pdf
    • https://cdn.shopify.com/s/files/1/0434/0459/1271/files/36285411299.pdf
    • https://cdn.shopify.com/s/files/1/0430/3686/8762/files/7.pdf
    • https://cdn.shopify.com/s/files/1/0430/9313/1425/files/mitoj.pdf
    • https://cdn.shopify.com/s/files/1/0428/3239/6447/files/makoriziro.pdf
    • https://cdn.shopify.com/s/files/1/0434/7520/6294/files/kreg_pocket_hole_jig_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/0965/4436/files/samsung_ssd_magician.pdf
    • https://cdn.shopify.com/s/files/1/0434/4266/7676/files/18997592133.pdf
    • https://cdn.shopify.com/s/files/1/0434/4381/4560/files/38551889398.pdf
    • https://cdn.shopify.com/s/files/1/0431/0876/1766/files/72486390197.pdf
    • https://cdn.shopify.com/s/files/1/0435/2429/2762/files/83910983026.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_off00006953.bin
f8c7edfa9ba961d5e405775b2c730dd94a7572f86cd5da2139691f31a13eaa75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6953 5184 bytes
font_01_sfnt_off00007b0d.bin
eb8ac87eee4619525d40081b68f29d003e86bf532e6f42e83482a77a078eca3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B0D 13600 bytes

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