Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f68c1e7addb5889…

MALICIOUS

PDF

64.3 KB Created: 2020-08-31 05:17:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c38ee5e48ba201407c940bbb5bc00bda SHA-1: 3fdf2092eb5766f735c6f0807f7eac0860f6fc3a SHA-256: 6f68c1e7addb5889429bff116aa5a33ce1f5a5c95d30eb2c8eca3858ba6ec94f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to Shopify URLs that appear to be part of an SEO link farm. One critical heuristic identified a link to a known malicious redirector at 'ttraff.com'. This suggests the document is designed to drive traffic to malicious infrastructure, likely as part of a phishing or scam campaign.

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/wix?keyword=el+vendedor+mas+grande+del+mundo
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0429/6704/0163/files/patixurakikavelot.pdf
    • https://cdn.shopify.com/s/files/1/0463/2949/5713/files/new_purulia_baul_dj_song.pdf
    • https://cdn.shopify.com/s/files/1/0437/6051/7274/files/sixuj.pdf
    • https://cdn.shopify.com/s/files/1/0432/2977/3982/files/41673431010.pdf
    • https://cdn.shopify.com/s/files/1/0435/8658/4733/files/cahier_exercice_anglais_6eme.pdf
    • https://cdn.shopify.com/s/files/1/0437/8211/1381/files/60977719639.pdf
    • https://cdn.shopify.com/s/files/1/0429/1212/0998/files/pananaliksik_tungkol_sa_asignaturang_filipino.pdf
    • https://cdn.shopify.com/s/files/1/0428/9868/6119/files/28285194203.pdf
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/bookworm_adventures_2_with_crack.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31492874922.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lezoxaxus.pdf
    • https://cdn.shopify.com/s/files/1/0431/7095/5415/files/weight_loss_tips_in_tamil_language.pdf
    • https://static.usrfiles.com/ugd/2b25b5_9c0a1c6583e04b5cbc8af2bb189a0099.pdf
    • https://static.usrfiles.com/ugd/191a6d_804399a018284d8e9bb1c2f3c24f0afe.pdf
    • https://static.usrfiles.com/ugd/37428b_abc73cc539f2426bb641fddcd1e0ea2c.pdf
    • https://static.usrfiles.com/ugd/b8c837_02fcd7a8c76540ff8357d32089e30245.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ae99.bin
5e51c704f19ef1e7e116a54e27e589b85114575d4d37a8368e1c31ef272c5aa2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE99 4916 bytes
font_01_sfnt_off0000bf2b.bin
f59d55e7390e638a74f425e24aed27827bff31b85d25ac02821285ec9cdb5987		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF2B 11344 bytes
font_02_sfnt_off0000e40e.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE40E 4324 bytes

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