Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b7feb77c284d895…

MALICIOUS

PDF

36.4 KB Created: 2020-08-21 03:03:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fd9a14a975e48ae67c8256e4e88c5e48 SHA-1: 3862d25c897480d51252048449bb8360e03d01f5 SHA-256: 5b7feb77c284d895e5c15a54e50a0ae5f818c486d83e66a1d1f03ead760fe7ee
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, which is indicative of a link farm. One prominent link, 'https://ttraff.ru/pify?keyword=addams+family+values+full+movie', is flagged as a malicious redirector. This suggests the document is designed to drive traffic to malicious infrastructure, likely for phishing or malware distribution. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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.ru/pify?keyword=addams+family+values+full+movie
    • http://files.evangelizeme.org/uploads/1/3/0/7/130739363/6186097.pdf
    • http://files.sallyjcurtis.co.uk/uploads/1/3/0/7/130776439/8557748.pdf
    • http://files.chosenoneministries.net/uploads/1/3/0/7/130776131/wowaxowin_tafovixubafuwep_vixapibabolo_firefosu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/6314/8706/files/nizatadu.pdf
    • https://cdn.shopify.com/s/files/1/0433/2329/3864/files/31026798607.pdf
    • https://cdn.shopify.com/s/files/1/0429/6979/2668/files/rilegulemuz.pdf
    • https://cdn.shopify.com/s/files/1/0437/0297/6666/files/powujiwerapofatejem.pdf
    • https://cdn.shopify.com/s/files/1/0434/6318/0454/files/94702957988.pdf
    • https://cdn.shopify.com/s/files/1/0433/2604/6362/files/tesis_de_caries_dental_en_nios.pdf
    • https://cdn.shopify.com/s/files/1/0447/9811/6006/files/date_sheet_ignou_dec_2019.pdf
    • https://cdn.shopify.com/s/files/1/0428/1732/3175/files/winibitof.pdf
    • https://cdn.shopify.com/s/files/1/0435/8035/8815/files/werireguroz.pdf
    • https://cdn.shopify.com/s/files/1/0430/9614/6074/files/3017205629.pdf
    • https://cdn.shopify.com/s/files/1/0435/5401/3336/files/zevavonixabirap.pdf
    • https://cdn.shopify.com/s/files/1/0432/5851/1510/files/wogowitaluwajedesajom.pdf
    • https://cdn.shopify.com/s/files/1/0427/5293/4044/files/23176791662.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ff8.bin
f02260ab6cc8247965b5abf221475d90ec5634fd57fc710c3d73937e23685507		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FF8 5108 bytes
font_01_sfnt_off0000615c.bin
16df15a647683fa6f340338c44718daa3a937fa16d1389ea3f5d9f51cb63061d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x615C 10388 bytes

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