Malicious PDF — malware analysis report

Static analysis result for SHA-256 602eebfa5fdad331…

MALICIOUS

PDF

56.7 KB Created: 2020-08-16 12:47:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1f2ef2a3e613d437c0f2a6a9bb33b517 SHA-1: e9728d1b3bff47878b5bc2eac8dbb126672775f8 SHA-256: 602eebfa5fdad331ee873a00bc61d8dbfddb1fbf7121662ed0927125bf386aff
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as an online form. The document also hosts a large number of external PDF links, many of which point to benign Shopify domains, suggesting a link farm or SEO manipulation tactic. The ML classifier strongly indicated maliciousness, and the overall structure points to a phishing or redirection attempt.

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.com/pify?keyword=school+education+haryana+134a+online+form
    • http://files.theknitandstitchshoppe.com/uploads/1/3/0/7/130739616/300433.pdf
    • http://files.parksvillerx.com/uploads/1/3/0/7/130775897/4118476.pdf
    • http://files.ceylonboutiquehotels.com/uploads/1/3/1/3/131384771/zaxeg.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0435/5755/2277/files/petetalukebopakugoduxa.pdf
    • https://cdn.shopify.com/s/files/1/0438/2556/1757/files/benefits_of_social_media_in_business.pdf
    • https://cdn.shopify.com/s/files/1/0429/4747/7667/files/biotecnika_times.pdf
    • https://cdn.shopify.com/s/files/1/0433/4161/1159/files/tafosa.pdf
    • https://cdn.shopify.com/s/files/1/0435/8812/4835/files/40186232905.pdf
    • https://cdn.shopify.com/s/files/1/0440/3508/0342/files/vebafeg.pdf
    • https://cdn.shopify.com/s/files/1/0432/2718/5316/files/zetupukiwel.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65294746239.pdf
    • https://cdn.shopify.com/s/files/1/0427/9032/2342/files/zisanekisuf.pdf
    • https://cdn.shopify.com/s/files/1/0438/6367/0939/files/xodafofuzokusigufera.pdf
    • https://cdn.shopify.com/s/files/1/0440/2987/0230/files/american_girl_song.pdf
    • https://cdn.shopify.com/s/files/1/0439/5152/1947/files/7733403646.pdf
    • https://cdn.shopify.com/s/files/1/0429/6710/5687/files/19054018877.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/
    • http://scripts.sil.org/OFL
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNU
    • http://www.gnu.org/copyleft/gpl.htmRegular

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cb0.bin
317a5ba5c49ac803084c71d163a1c491912827a74cd243effbe8fcf16809b68e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CB0 5592 bytes
font_01_sfnt_off00007f91.bin
d5ecec3e822993868ba70e247019bcdb656a9fee58d620eb93bc70658e929280		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F91 3720 bytes
font_02_sfnt_off00008af4.bin
9ba3d0f7ee4ca5a3af9caccb54fa972cf69ede4a36a79432b2cd82b80afe05fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AF4 13248 bytes
font_03_sfnt_off0000b4b7.bin
9087185808b52d989e93d5260eeb306ba4f470ed8da5d35d5c63f165c7c7ca43		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB4B7 9540 bytes

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