Malicious PDF — malware analysis report

Static analysis result for SHA-256 888472dae1b81f81…

MALICIOUS

PDF

34.3 KB Created: 2020-08-12 12:19:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45f868e5f3d13be3485d6e84e0151539 SHA-1: a32e75af452b47a79837f7d8253bb1f0fcf80194 SHA-256: 888472dae1b81f8111f64c79abe42c78895750720e419984794319b81372e8df
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to benign Shopify domains, but one critical link directs to a known malicious redirector. This suggests a phishing or scam attempt, likely using the guise of a technical document to trick users into clicking the malicious link. The ML classifier also strongly indicated maliciousness.

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=imperative+programming+techmax+pdf
    • http://files.irentphilippines.com/uploads/1/3/1/0/131069875/mipab.pdf
    • http://files.johnsoncitytexas.info/uploads/1/3/2/7/132712661/9c5860.pdf
    • http://files.texasaikidonetwork.com/uploads/1/3/1/6/131637194/8627315.pdf
    • http://files.so365compliance.com/uploads/1/3/2/7/132712333/vitotuzuwijebus.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/8489/7701/files/46405811465.pdf
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/fakudomavalukowoxefinut.pdf
    • https://cdn.shopify.com/s/files/1/0438/3630/9666/files/ti_81_calculator.pdf
    • https://cdn.shopify.com/s/files/1/0431/0558/3266/files/53516991166.pdf
    • https://cdn.shopify.com/s/files/1/0434/0213/3671/files/siras.pdf
    • https://cdn.shopify.com/s/files/1/0437/5832/1818/files/20_hp_mercury_outboard_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/6839/9524/files/77278483322.pdf
    • https://cdn.shopify.com/s/files/1/0447/4011/6629/files/able2extract_to_excel_converter.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zudofujavulasosajawigubi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7618/1400/files/kiduve.pdf
    • https://cdn.shopify.com/s/files/1/0434/6193/5261/files/gometewadepu.pdf
    • https://cdn.shopify.com/s/files/1/0434/2166/3397/files/gofutizaseruxovujuziloki.pdf
    • https://cdn.shopify.com/s/files/1/0428/7312/7079/files/nremt_practice_test.pdf
    • https://cdn.shopify.com/s/files/1/0434/7245/3784/files/autocad_2016_tutorial.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_off00004986.bin
8abd35f73cea9d4915d6db6944c0c1ad59b223c162182c6384070c278d533f3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4986 5424 bytes
font_01_sfnt_off00005bce.bin
40621afbb3a030a35b7e005f3c4ebb5ebd880f65e69eb2f180d4854a2e4a8086		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BCE 9588 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.