Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e031abc9333d618…

MALICIOUS

PDF

46.1 KB Created: 2020-08-22 23:11:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a8d1b49e3367848a112470f8c359da10 SHA-1: 4c2905bf6d194fd5dea79416a949e86db1a382a7 SHA-256: 0e031abc9333d6184cb66fbf06b8ae754c7565ed5863426ca01fc1f9c00738b5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains embedded links, with one pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'bus travel ticket format' and a URL that appears to be part of an advance-fee scam lure. The presence of numerous external PDF links further suggests a link farm or redirection tactic.

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.com/pify?keyword=bus+travel+ticket+format+in+word
    • http://jurejo.karenodden.com/uploads/1/3/1/4/131408899/96162b2d5236.pdf
    • http://binalom.vinoetamicis.com/uploads/1/3/1/4/131406821/1425fc6c8d4.pdf
    • http://files.dmvconartists.com/uploads/1/3/1/3/131379395/nuvadanawema_depakig_betegipebovufed.pdf
    • http://joledozi.chinalux-bsc.com/uploads/1/3/2/6/132680901/3164130.pdf
    • http://gafobavuk.festivalontheave.org/uploads/1/3/1/4/131406715/jarumu_kevovoki_goveriwekubu_kibupexale.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0428/4874/7676/files/13496586422.pdf
    • https://cdn.shopify.com/s/files/1/0437/5334/1082/files/jawowenivitunodevozimuv.pdf
    • https://cdn.shopify.com/s/files/1/0438/3594/9218/files/18873153006.pdf
    • https://cdn.shopify.com/s/files/1/0429/8014/7359/files/aptoide_apk_installieren.pdf
    • https://cdn.shopify.com/s/files/1/0431/8547/1656/files/45824797889.pdf
    • https://cdn.shopify.com/s/files/1/0436/9442/4232/files/nower.pdf
    • https://cdn.shopify.com/s/files/1/0435/6797/2515/files/already_just_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0437/9177/7949/files/fafsa_application_form.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005feb.bin
7e52f598ca5759d6a13f2f823a20f5c18c8f4f5fce16828302355e4b26a3f710		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FEB 5316 bytes
font_01_sfnt_off000071f5.bin
f316da703a73149feaf877bd182b3ea96b6ff8d302951d76de631a03f6e41604		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71F5 14036 bytes
font_02_sfnt_off00009d38.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D38 4324 bytes

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