Malicious PDF — malware analysis report

Static analysis result for SHA-256 6148149710702fcb…

MALICIOUS

PDF

49.7 KB Created: 2020-08-05 12:19:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e04277b52f9ae1ed42d15a8e6c4d6061 SHA-1: 3e29daa5ca3bfd51c2671f5b2743e299a8894c5c SHA-256: 6148149710702fcbfd75bceeea6a17088c17c1768b39fb77e7debbb252fed3dd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links, one of which, 'https://ttraff.cc/pify?keyword=nrega+job+card+application+form+pdf', is identified as a malicious redirector. The document body also contains this URL, suggesting an attempt to lure the user into clicking it. The presence of numerous other PDF links, many pointing to Shopify domains, indicates a potential link farm or SEO manipulation tactic to distribute malicious content.

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=nrega+job+card+application+form+pdf
    • http://files.bbsimon.com/uploads/1/3/2/6/132682570/tudijimavu.pdf
    • http://files.tankuanaw.com/uploads/1/3/1/3/131379612/eda4253071.pdf
    • http://files.westrayjuniorhighschool.co.uk/uploads/1/3/0/7/130775431/joxokobepedufaf-petevulinediki-mekur.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0433/7631/2478/files/kemokalerosemevogobuwej.pdf
    • https://cdn.shopify.com/s/files/1/0432/5307/2022/files/anleitung_zur_anlage_er_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/7164/3554/files/jolox.pdf
    • https://cdn.shopify.com/s/files/1/0428/1221/1359/files/48425730984.pdf
    • https://cdn.shopify.com/s/files/1/0438/6911/0432/files/daxadazijelunijem.pdf
    • https://cdn.shopify.com/s/files/1/0433/7070/9150/files/jifipebepanuzovugevekuda.pdf
    • https://cdn.shopify.com/s/files/1/0432/1925/5454/files/1309956082.pdf
    • https://cdn.shopify.com/s/files/1/0427/6885/9303/files/doxupes.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sazofafusogowo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zugazad.pdf
    • https://cdn.shopify.com/s/files/1/0436/2059/7923/files/retopelamezef.pdf
    • https://cdn.shopify.com/s/files/1/0430/6475/4325/files/69177319263.pdf
    • https://cdn.shopify.com/s/files/1/0435/5879/7471/files/70843613353.pdf
    • https://cdn.shopify.com/s/files/1/0429/0415/8375/files/bifawuvudevavomage.pdf
    • https://cdn.shopify.com/s/files/1/0430/4103/0293/files/31255726993.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_off00006bd9.bin
53e598ec2c39643b8d2aaf62b7c4d6d05c2afc30b964ca0b70041cf18bb6ff72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BD9 5480 bytes
font_01_sfnt_off00007e7b.bin
b36b1be73a58a61e30141b6547fff7e6090899a387737c792fefe5b93bf7338d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E7B 10012 bytes
font_02_sfnt_off0000a115.bin
7eb92e0fbdcfe1dbda673fe35a647f9a742740a490218eb23ebd1bd32e0ab1d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA115 6112 bytes

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