Malicious PDF — malware analysis report

Static analysis result for SHA-256 0639e88969451421…

MALICIOUS

PDF

44.4 KB Created: 2020-10-30 22:44:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 1a8f592d35eda3646048f45423ef8a97 SHA-1: b91aeb1bfe2faf441acbbb84681bf0987f949880 SHA-256: 0639e8896945142130abc9772f4b2eec01da6b90b49017e9e6e71038c130331f
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is presented in the context of job opportunities. This suggests a phishing or scam attempt. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of embedded URLs and the malicious redirector are strong indicators of a phishing attack.

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/123?keyword=eden+christian+academy+jobs In PDF document text
    • https://digonowokeke.weebly.com/uploads/1/3/1/8/131856318/dfcf10eea1fc6fc.pdfIn PDF document text
    • https://donikigegetala.weebly.com/uploads/1/3/4/3/134311768/6d1d46a9ce1.pdfIn PDF document text
    • https://xonimitofowe.weebly.com/uploads/1/3/2/6/132682232/0075e55c0a8.pdfIn PDF document text
    • https://vewusijonaw.weebly.com/uploads/1/3/4/4/134489037/3520446.pdfIn PDF document text
    • https://jojawetoterul.weebly.com/uploads/1/3/4/4/134404105/rufuwatemo-gapus-gevopajuderokab-pipojokadudi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5172/0090/files/a_void_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/2170/2596/files/voxupivorewatarujijaved.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8663/5693/files/catalytic_propane_heaters_portable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0298/9208/files/40_hadith_nawawi_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1804/4070/files/safirudetosolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/3041/0941/files/teacher_evaluation_rubric_nc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/2446/0194/files/vibofegujebutegisumukatap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3603/3695/files/the_art_of_the_story_daniel_halpern.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2735/1717/files/65481369197.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006032.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6032 5212 bytes
SHA-256: e31aaf731a22e1f2e7ff9ce5a36073bd8d6566b29c0d9b6b40d968f0344d48e8
font_01_sfnt_off000071b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71B6 10744 bytes
SHA-256: 217cbac51ecefdeb3caa27db7ad8d54504ad3c2b7d0cf019eef097baa843a9c9
font_02_sfnt_off00009679.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9679 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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