Malicious PDF — malware analysis report

Static analysis result for SHA-256 028bced86e4f91c0…

MALICIOUS

PDF

55.2 KB Created: 2020-08-04 19:19:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b36db27313505e356bf52b9e13c781c2 SHA-1: b30b3d4e8c4204658d52fb1ca86acf1cd8ec06c3 SHA-256: 028bced86e4f91c06276e0d74d250baa6da6eb042601d6774a305db9bb6b49e7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing for a malicious redirector link, which points to a URL designed to lead users to further malicious content. The document also exhibits characteristics of a link farm, with numerous embedded URLs, many of which are benign Shopify links but one critical redirector. The ML classifier strongly indicates maliciousness, supporting the conclusion that this PDF is 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.cc/pify?keyword=affairs+cloud+current+affairs+pdf+july
    • http://files.nightingaleicecreamsandwiches.com/uploads/1/3/1/4/131483343/3379968.pdf
    • http://files.stjohntheevangelistcarrollton.com/uploads/1/3/1/4/131437123/6461046.pdf
    • http://files.kelliegodfrey.com/uploads/1/3/1/8/131856574/5eee6cf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/9151/5809/files/devuxetivijolefewadef.pdf
    • https://cdn.shopify.com/s/files/1/0434/6567/0806/files/gomibujorow.pdf
    • https://cdn.shopify.com/s/files/1/0430/1992/7713/files/pefoxanaku.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/64831632673.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/92787176176.pdf
    • https://cdn.shopify.com/s/files/1/0431/0158/5570/files/pavonoje.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53522836856.pdf
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/28876824490.pdf
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/ninoresapexuga.pdf
    • https://cdn.shopify.com/s/files/1/0431/7321/6411/files/77760336514.pdf
    • https://cdn.shopify.com/s/files/1/0429/3489/4755/files/kinobibajej.pdf
    • https://cdn.shopify.com/s/files/1/0432/6113/2968/files/kuforolakidasi.pdf
    • https://cdn.shopify.com/s/files/1/0432/9200/0406/files/44356102611.pdf
    • https://cdn.shopify.com/s/files/1/0435/8501/1869/files/zenav.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_off00009a5d.bin
e04d23f0a4e94292cc7658588bf03376632f353fd19b99a2ba83813a1f14590f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A5D 5316 bytes
font_01_sfnt_off0000ac94.bin
d5b3274cd973cb5bc4d8e512e7de8f0129299e0e9af13395ca5aecf0808928f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC94 10160 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.