Malicious PDF — malware analysis report

Static analysis result for SHA-256 03281c5710087727…

MALICIOUS

PDF

37.6 KB Created: 2020-08-09 21:37:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dbb3f69fb681bdfe1e1a703b84894d82 SHA-1: c52ad71594b62eb2128910387d5acc460890572b SHA-256: 03281c5710087727b6c9c0514c4df35c17e77fd94de9b7cc7d0482ffd1f8eb0b
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly suggests the document's purpose is to trick users into engaging with a scam, likely by clicking the malicious link. The presence of many external PDF links, including a known malicious redirector, indicates an attempt to lead users to potentially harmful content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=forensic+anthropology+training+manual+3rd+edition+pdf
    • http://buwosazon.reikisoundbliss.com/uploads/1/3/2/8/132814930/58ed6f6f.pdf
    • http://files.hyperventila.com/uploads/1/3/1/0/131070327/60380044.pdf
    • http://files.vliegendestoel.nl/uploads/1/3/1/3/131379301/6752364.pdf
    • http://files.openhouseeducation.com.au/uploads/1/3/0/7/130775046/9934897.pdf
    • http://files.bolsterrogers.com/uploads/1/3/1/4/131437017/2d526ed22f73.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/1819/7912/files/dozoradoduretiv.pdf
    • https://cdn.shopify.com/s/files/1/0431/0253/5840/files/5629730571.pdf
    • https://cdn.shopify.com/s/files/1/0438/9548/8680/files/front_office_job_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0435/2655/3755/files/75541532624.pdf
    • https://cdn.shopify.com/s/files/1/0428/8472/6943/files/xoxes.pdf
    • https://cdn.shopify.com/s/files/1/0431/5086/8646/files/97111269686.pdf
    • https://cdn.shopify.com/s/files/1/0431/8108/0738/files/4161065511.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/26595239554.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/28105612008.pdf
    • https://cdn.shopify.com/s/files/1/0440/6873/3078/files/denaselinetutirefifo.pdf
    • https://cdn.shopify.com/s/files/1/0437/9944/5664/files/accountable_talk_cards.pdf
    • https://cdn.shopify.com/s/files/1/0436/7273/1801/files/characteristics_of_a_good_project.pdf
    • https://cdn.shopify.com/s/files/1/0429/4190/7110/files/wifafejobosimibogori.pdf
    • https://cdn.shopify.com/s/files/1/0428/4183/3635/files/31268962087.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gejazopemovaro.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_off000051d6.bin
5ccf19aede24f41d21402676e34042d4abb5a25564803df76fd6b56ecca19b14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51D6 5788 bytes
font_01_sfnt_off00006576.bin
3322547e644d330db8345481bf752b7dbacbdfb819cf1ca6a4a85b65bffe0688		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6576 10424 bytes

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