Malicious PDF — malware analysis report

Static analysis result for SHA-256 e61f0d9c72939e75…

MALICIOUS

PDF

44.2 KB Created: 2020-08-14 14:28:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a82eb971535f82e0b4c03d75ad9bd218 SHA-1: 86adb45a214d36f793fe659efbb0363a24d8412c SHA-256: e61f0d9c72939e75a2c53769bc127a748d5352591ee3de177da705f80ba15669
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text fragments suggesting a 'salary report' lure. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=aaup+salary+report
    • http://files.philippecorriveau.com/uploads/1/3/0/7/130740625/2ba4a52d67.pdf
    • http://files.zumbawithmelody.com/uploads/1/3/2/8/132814166/dubavuwolow.pdf
    • http://files.mrshineslittlechipps.com/uploads/1/3/0/8/130813768/lojokixizi-zilasokaxipod-lumawix-fugudu.pdf
    • http://files.elantravel.net/uploads/1/3/1/4/131453007/6973532.pdf
    • https://cdn.shopify.com/s/files/1/0432/4642/0136/files/majotoxekebufalokapiwe.pdf
    • https://cdn.shopify.com/s/files/1/0428/7217/6796/files/49518068621.pdf
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/lv_car_insurance_certificate.pdf
    • https://cdn.shopify.com/s/files/1/0430/8851/1125/files/38834164760.pdf
    • https://cdn.shopify.com/s/files/1/0438/5813/3152/files/61720587464.pdf
    • https://cdn.shopify.com/s/files/1/0429/1526/6713/files/sejezufifukefemeneme.pdf
    • https://cdn.shopify.com/s/files/1/0431/9998/7873/files/61344634846.pdf
    • https://cdn.shopify.com/s/files/1/0429/7729/6543/files/gakinigujuvi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6374/6453/files/mp4_to_m4r.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/viborovikumowenaben.pdf
    • https://cdn.shopify.com/s/files/1/0437/6687/4269/files/xatugeponekapixonejoxu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8389/0850/files/partnership_accounts_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/8946/1410/files/8503870188.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061b5.bin
a6ee43a2eccceaea34512f0f8055062d0df0ecdf1e5311b18b2791abcb2011ea
pdf-font-stream PDF embedded font (sfnt) at offset 0x61B5 4632 bytes
font_01_sfnt_off00007190.bin
ebdc672fda597c6af2490951409e9ee810cee329a134fb7fc9fc3b1126d03449
pdf-font-stream PDF embedded font (sfnt) at offset 0x7190 10764 bytes
font_02_sfnt_off0000962d.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x962D 4324 bytes