Malicious PDF — malware analysis report

Static analysis result for SHA-256 04686e46596e1340…

MALICIOUS

PDF

70.3 KB Created: 2020-08-10 23:28:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 22c2cbb019b08a345c77753a17c75038 SHA-1: 51a40e54547ab16393e0478f75f0e214e546e411 SHA-256: 04686e46596e13405ae3654e3a515f5401b37475d2ae21adeabbb99b8753b75a
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to be a lure for an advance-fee scam, as indicated by the heuristic SE_ADVANCE_FEE_SCAM_LURE. The presence of many external PDF links suggests an attempt to manipulate search engine results or host further malicious content.

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=government+owned+fixed+asset+management+manual+pdf
    • http://jivebalaz.paintnwithfriends.com/uploads/1/3/1/3/131383309/wejuledenuguve_punovep.pdf
    • http://files.woofgangnco.com/uploads/1/3/1/8/131858044/3c5aa48.pdf
    • http://files.mountainrescueinstitute.com/uploads/1/3/0/7/130775231/a56d6f.pdf
    • http://files.brookturnerblades.com/uploads/1/3/1/4/131483662/timeruvununu_pidapapopenin_gonutezifiwela.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/3906/4225/files/75665763036.pdf
    • https://cdn.shopify.com/s/files/1/0447/6780/5591/files/vegad.pdf
    • https://cdn.shopify.com/s/files/1/0434/2359/6693/files/abc_costing_system.pdf
    • https://cdn.shopify.com/s/files/1/0430/6662/2105/files/97634299117.pdf
    • https://cdn.shopify.com/s/files/1/0447/6341/4682/files/wenipijosuxoxosidi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/fusupibuwuz.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/xozobuta.pdf
    • https://cdn.shopify.com/s/files/1/0436/0005/2387/files/39226759831.pdf
    • https://cdn.shopify.com/s/files/1/0428/8158/1223/files/59117122959.pdf
    • https://cdn.shopify.com/s/files/1/0431/5168/7848/files/80275468265.pdf
    • https://cdn.shopify.com/s/files/1/0433/0923/6374/files/jisikagef.pdf
    • https://cdn.shopify.com/s/files/1/0433/9800/4899/files/446493351.pdf
    • https://cdn.shopify.com/s/files/1/0427/8566/9279/files/zafekekakojebekefupefotu.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_off0000d4e6.bin
8dcecec1864d7fc1b6cd890c023612a8c91825227772ca2705fd125794ad7a6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD4E6 5612 bytes
font_01_sfnt_off0000e80a.bin
7f7983d3af854899161d99cc5b2307ecb160f1b7f11f82760941ff8ae707ef41		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE80A 10352 bytes

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