Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bfe9a4e3d5cabe1…

MALICIOUS

PDF

46.0 KB Created: 2020-08-19 16:37:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 12229d43203c3e9ffdb8708364bbfdb1 SHA-1: a9efd0b9997577afd08ab2d81e097fd59759c20b SHA-256: 6bfe9a4e3d5cabe1d396b6075f4761d90a0218134f3116177eb7a961cecda06f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a high number of embedded links, many of which point to a redirector service known for malicious activity. The primary malicious link identified is 'https://ttraff.cc/pify?keyword=my+heritage+family+tree+builder+user+guide', which likely serves as a lure for phishing or malware distribution. The ML classifier strongly indicated maliciousness, supporting the heuristic findings.

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=my+heritage+family+tree+builder+user+guide
    • http://files.fbcggyouth.org/uploads/1/3/1/8/131871569/6952c29e49e982.pdf
    • http://duwaj.jumpforjoymemphis.com/uploads/1/3/1/6/131606624/zelalaxonane.pdf
    • http://bodel.gamechefs.net/uploads/1/3/0/7/130738970/naxaleta_furokorukorov_sanoguf_mosejuful.pdf
    • http://files.tablewinemerchant.com/uploads/1/3/1/4/131406082/xozalozimuri-rogolujir-kabase-rulanurezawu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/6418/8312/files/joxoviteponukadekijalo.pdf
    • https://cdn.shopify.com/s/files/1/0438/6367/0939/files/52920075501.pdf
    • https://cdn.shopify.com/s/files/1/0432/0804/8808/files/86298423252.pdf
    • https://cdn.shopify.com/s/files/1/0452/2446/0445/files/gevugofokoxum.pdf
    • https://cdn.shopify.com/s/files/1/0429/4960/7590/files/master_degree_study_plan_sample.pdf
    • https://cdn.shopify.com/s/files/1/0436/5529/9237/files/33302072398.pdf
    • https://cdn.shopify.com/s/files/1/0440/5808/3480/files/first_birthday_invitations_girl_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/7279/0428/files/68355101114.pdf
    • https://cdn.shopify.com/s/files/1/0435/5892/8545/files/agenda_21_for_dummies.pdf
    • https://cdn.shopify.com/s/files/1/0431/0643/5232/files/xakowojetavekezarex.pdf
    • https://cdn.shopify.com/s/files/1/0427/9923/5228/files/fun_personality_quiz.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_off00007428.bin
4b86eb02aec206def52dbaf1d66f18baa4470ca378b81fecdf45cde97347c527		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7428 5568 bytes
font_01_sfnt_off000086fe.bin
0c820a89065d9431761c174b58af32227bd5b08dc294b275089530a3a144563e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86FE 10524 bytes

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