Malicious PDF — malware analysis report

Static analysis result for SHA-256 888b96c196cbadad…

MALICIOUS

PDF

41.1 KB Created: 2020-09-18 15:52:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f67d4c0b1fbfebb0a153aac49084381a SHA-1: ab425a7ea1beeb8e56cdca16eee4642b756c8b48 SHA-256: 888b96c196cbadadf8919de76029b1b9160b94c42c21a508539b3385932198fc
154 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a malicious redirector, disguised with keywords related to a popular game. The ML classifier strongly indicates maliciousness. The embedded link `https://ttraff.me/wix?keyword=farming+simulator+2017+apk+mod` is the primary indicator of a phishing or scam attempt, likely leading to malware download or further redirection.

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.me/wix?keyword=farming+simulator+2017+apk+mod
    • http://sepapeje.dhwanidance.com/uploads/1/3/0/7/130775052/petenite.pdf
    • http://mavokobun.splchampton.com/uploads/1/3/2/6/132680835/dbbd12a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0429/5173/7498/files/titik.pdf
    • https://cdn.shopify.com/s/files/1/0431/2399/8874/files/jupemekuzajijofomesode.pdf
    • https://cdn.shopify.com/s/files/1/0429/7211/9199/files/pigufotogawikomisikagoni.pdf
    • https://b645d3fb-5c5d-46c3-b9b3-7aa39d2496c2.filesusr.com/ugd/16879a_140cad59ba2f4421a1d090b43f79da59.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0432/9291/7924/files/algebra_2_sol_review_packet.pdf
    • https://cdn.shopify.com/s/files/1/0429/2876/7143/files/chapter_2_biology_class_11_ncert.pdf
    • https://cdn.shopify.com/s/files/1/0431/5483/3564/files/bokunosuvixugajejatun.pdf
    • https://cdn.shopify.com/s/files/1/0429/7474/0636/files/figepezikigek.pdf
    • https://cdn.shopify.com/s/files/1/0439/1544/4376/files/latest_android_version_huawei.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_off00005233.bin
fd00458564344b2b02a94793f0c131edb374e4cff545fdb9118f20a263f18590
pdf-font-stream PDF embedded font (sfnt) at offset 0x5233 5468 bytes
font_01_sfnt_off000064b4.bin
ed934ab191a94b6c27b3fc4d0ec51fa65c877bafa92c0abf79414e91d6fb843a
pdf-font-stream PDF embedded font (sfnt) at offset 0x64B4 10796 bytes
font_02_sfnt_off0000898d.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x898D 4324 bytes