Malicious PDF — malware analysis report

Static analysis result for SHA-256 34814bd56c226d47…

MALICIOUS

PDF

37.5 KB Created: 2020-08-12 18:55:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d285afb0bc9db64a2e3b63d5c48b9e35 SHA-1: 14a2a3e526534983d90dcc0f0f949db1eecf8286 SHA-256: 34814bd56c226d4771e281ef5ad3fd34103edc358065a13b9ca30662e0102c2a
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is likely part of a phishing or scam campaign designed to lure users into clicking on it. The document body also contains this URL and numerous other links hosted on Shopify, suggesting a link farm or SEO poisoning tactic to distribute the 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=antenna+wave+propagation+book+pdf
    • http://files.inspireauthenticity.net/uploads/1/3/0/7/130739480/robixizonuvupog_xivapevokela.pdf
    • http://files.amandabeekhuizen.com/uploads/1/3/0/7/130775690/d5ff23774ec07bf.pdf
    • http://files.premierbuildingsbandera.com/uploads/1/3/2/8/132814972/wurizameno.pdf
    • http://files.aromatsubo.com/uploads/1/3/1/4/131453206/sebaxivajimigazi.pdf
    • http://detilev.basinandrange.org/uploads/1/3/1/3/131384424/sogaxegefisixaj.pdf
    • https://cdn.shopify.com/s/files/1/0432/6454/0840/files/37613613872.pdf
    • https://cdn.shopify.com/s/files/1/0431/0863/0681/files/jirezazebatasujirodam.pdf
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/bring_it_on_home_to_me_piano.pdf
    • https://cdn.shopify.com/s/files/1/0433/9027/1638/files/36644942438.pdf
    • https://cdn.shopify.com/s/files/1/0431/4392/1820/files/87635019033.pdf
    • https://cdn.shopify.com/s/files/1/0435/7177/3601/files/zojewofimub.pdf
    • https://cdn.shopify.com/s/files/1/0427/4018/7303/files/gixifalojesugevuwogitaf.pdf
    • https://cdn.shopify.com/s/files/1/0428/2590/8383/files/parula.pdf
    • https://cdn.shopify.com/s/files/1/0435/7783/5681/files/65806128676.pdf
    • https://cdn.shopify.com/s/files/1/0431/7967/1718/files/23302307975.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/16711599054.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pujofupokutesigitugut.pdf
    • https://cdn.shopify.com/s/files/1/0430/6989/8909/files/pdf_to_word_app_play_store.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000552a.bin
50b8923ed29bee00450c3221e8b9d7f338b3f132083f5d391f388eb0ae32ca3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x552A 5344 bytes
font_01_sfnt_off00006781.bin
18bfca4d0c98efa031085366a3f86d560886cc2ebb3f5b43f689d48d9f637532		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6781 9832 bytes

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