Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6c84e80f86bac96…

MALICIOUS

PDF

41.4 KB Created: 2020-09-06 06:50:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e9ce6f33a5933ba230d0e77d0f6ea204 SHA-1: a0d5b58f56f5e599c147f2933f8ebf74342d1f4a SHA-256: e6c84e80f86bac96577ec984807ef21be9ac461ba0388fb1428ac0b8c2c1f136
154 Risk Score

Malware Insights

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

The PDF contains a high density of embedded links, many of which point to a redirector service. The document body, though heavily obfuscated, contains text referencing 'Clash of Clans bot ios' and a URL that aligns with this theme. This suggests a social engineering attempt to drive traffic to malicious infrastructure.

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.club/wix?keyword=clash+of+clans+bot++ios
    • https://static.usrfiles.com/ugd/3d0627_b641c485f3ad434f90f6588ef380868b.pdf
    • https://static.usrfiles.com/ugd/02beb7_bafc092ac3eb498d8bd11e89d0bbc386.pdf
    • https://static.usrfiles.com/ugd/685707_1a1a47497d2c4ae5a31fe67d990bb96a.pdf
    • https://cdn.shopify.com/s/files/1/0431/8894/5064/files/54705601263.pdf
    • https://cdn.shopify.com/s/files/1/0430/6409/8970/files/romowokaxo.pdf
    • https://cdn.shopify.com/s/files/1/0439/3353/2315/files/2k14_cheats_codes.pdf
    • https://cdn.shopify.com/s/files/1/0428/9842/3967/files/97659131591.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/chosen_blood_new_song.pdf
    • https://cdn.shopify.com/s/files/1/0434/2831/5288/files/lukepubiwomofugexiza.pdf
    • https://static.usrfiles.com/ugd/b8c837_0cced09d6a254860bd054564cf2df276.pdf
    • https://static.usrfiles.com/ugd/cc15ef_303025c1e284441a846822a6d49ce58d.pdf
    • https://static.usrfiles.com/ugd/32777b_bb3e49a0dd2943aebe33fbde413a97e6.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005774.bin
e8d55b396572a16aa77310f11e262f2c3e59eb8cad1f38410c185eeddb56df59
pdf-font-stream PDF embedded font (sfnt) at offset 0x5774 4708 bytes
font_01_sfnt_off00006763.bin
753f7265445253944335cf6dbb959c4b2b99d90c780d186ee3af60635740c1b3
pdf-font-stream PDF embedded font (sfnt) at offset 0x6763 10660 bytes
font_02_sfnt_off00008b0b.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B0B 4324 bytes