Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e79008c5f23e4c3…

MALICIOUS

PDF

39.7 KB Created: 2020-08-01 06:13:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 868843638fe7781358b97cd57b5134e6 SHA-1: 42e12ff094a8672b225dcecd23b704f8de5d8d98 SHA-256: 5e79008c5f23e4c336dda5412b92f5cc0b32a5fa68177d3b553138b0b1bf9443
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including a primary redirector to 'ttraff.com', which is flagged as malicious. The document body, though heavily obfuscated, appears to mimic a solutions manual to entice users to click the malicious link. The ML classifier strongly indicated maliciousness, supporting the conclusion that this PDF is part of a phishing or malware distribution scheme.

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/pify?keyword=introduction+to+computing+systems+solutions+manual+pdf
    • http://files.drcarlywilleford.com/uploads/1/3/1/4/131438891/1973227.pdf
    • http://files.paulwoodsartist.com/uploads/1/3/1/4/131437233/d499cc1410a1c64.pdf
    • http://files.ectacfl.net/uploads/1/3/0/7/130739593/1102124.pdf
    • http://files.esdaw-eu.eu/uploads/1/3/1/4/131482968/9515779.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/1656/0550/files/77042492848.pdf
    • https://cdn.shopify.com/s/files/1/0427/8580/0358/files/mamizovonisolazakepunawej.pdf
    • https://cdn.shopify.com/s/files/1/0435/2016/3999/files/desiwaxuxutetolamine.pdf
    • https://cdn.shopify.com/s/files/1/0437/8070/2366/files/37899236765.pdf
    • https://cdn.shopify.com/s/files/1/0431/5784/8224/files/mtg_arena_outdated_client_version.pdf
    • https://cdn.shopify.com/s/files/1/0437/5989/4682/files/nefajuwululipox.pdf
    • https://cdn.shopify.com/s/files/1/0437/1008/7317/files/tibuvirat.pdf
    • https://cdn.shopify.com/s/files/1/0431/2537/5127/files/57717561884.pdf
    • https://cdn.shopify.com/s/files/1/0434/4394/5622/files/14992568658.pdf
    • https://cdn.shopify.com/s/files/1/0429/8237/5577/files/93918146842.pdf
    • https://cdn.shopify.com/s/files/1/0436/2970/7422/files/tanunixidukakugi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8982/1847/files/42073401143.pdf
    • https://cdn.shopify.com/s/files/1/0435/9123/7794/files/54721937731.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_off00005cb6.bin
c17453d050dc09eda4a4ee07cc58c04f7b02c9e2cb7db64866b80415af2c762b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB6 5512 bytes
font_01_sfnt_off00006f66.bin
f064f32e68d4f91fe4aecc0d717439de4712117b93e45d4d5e09d555fd58d980		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F66 10036 bytes

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