Malicious PDF — malware analysis report

Static analysis result for SHA-256 7970f984cb066dec…

MALICIOUS

PDF

40.1 KB Created: 2020-08-04 00:04:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ddd84caa84ce1201ff0823628777d6fb SHA-1: 3b030db7c9dd858867af0d5ee555e1b72bdaf4b3 SHA-256: 7970f984cb066dec6975b2c0cfce660eacbac335c88c9b91ea0ad2ae2604ac85
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links, including a primary malicious redirector at 'https://ttraff.com/pify?keyword=bodmas+questions+pdf+for+railway'. The document body, though heavily obfuscated, appears to be a lure related to 'bodmas questions pdf for railway'. The presence of a link farm and a malicious redirector strongly suggests a phishing or scam attempt designed to lead users to 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.com/pify?keyword=bodmas+questions+pdf+for+railway
    • http://files.theradiancerefinery.com/uploads/1/3/2/7/132740564/kufosafe.pdf
    • http://files.gzpianoduo.com/uploads/1/3/1/4/131454523/lososomokoworemobana.pdf
    • http://tofuwul.courtneyflats.com/uploads/1/3/0/8/130874050/zugigurabizaxet_nuzebobuxu_lumoxosiwop_nopix.pdf
    • http://files.artistssupportingartists.net/uploads/1/3/0/7/130775598/viwifi.pdf
    • http://files.vmplf.com/uploads/1/3/0/8/130873914/6896220.pdf
    • https://cdn.shopify.com/s/files/1/0432/3885/0728/files/ganexirixobekirikame.pdf
    • https://cdn.shopify.com/s/files/1/0432/1515/9458/files/pabipuwitomabuvopuxunuba.pdf
    • https://cdn.shopify.com/s/files/1/0449/5890/8584/files/born_haber_cycle_problems.pdf
    • https://cdn.shopify.com/s/files/1/0433/7352/7203/files/try_me_dej_loaf_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/51414230641.pdf
    • https://cdn.shopify.com/s/files/1/0437/8247/1837/files/lixuxixefesufil.pdf
    • https://cdn.shopify.com/s/files/1/0428/5949/5590/files/gesotakugiko.pdf
    • https://cdn.shopify.com/s/files/1/0433/3253/4440/files/61118479034.pdf
    • https://cdn.shopify.com/s/files/1/0431/8032/7070/files/legewifazotopamazoje.pdf
    • https://cdn.shopify.com/s/files/1/0431/0351/8882/files/45658358200.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nomevorijodasulalo.pdf
    • https://cdn.shopify.com/s/files/1/0429/0409/2839/files/nurupixemozi.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/
    • https://cdn.shopify.com/s/files/1/0429/0409/2839/files/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ba3.bin
0e7f46ef44b484cbaea0f04a55de4c4128db660dd4a8a06afa77fe586b8afe77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BA3 5556 bytes
font_01_sfnt_off00006e84.bin
e4753cc71e83e2d16f8d15e2775b21e124a4fed68f168ee93822afda9ccc13b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E84 10804 bytes

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