Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f695016ac278265…

MALICIOUS

PDF

43.6 KB Created: 2020-08-16 20:22:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02e3eeb0bb5b562ac2afca4544134586 SHA-1: e25c50526cd9ceec65ec9c49a855d302e754202d SHA-256: 6f695016ac278265b4f2a7144fb37b8adf4d11eb5956d8960df96ecac7187459
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to harmful content. The document body, though heavily obfuscated, contains URLs that are part of a link farm, suggesting a tactic to manipulate search engine results or distribute malicious links. The ML classifier strongly flagged this PDF as malicious.

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=fury+survivor+pixel+z+guide
    • http://xeketen.moundridgelumber.com/uploads/1/3/0/9/130969744/9229267.pdf
    • http://pemafu.rockwaterpottery.com/uploads/1/3/0/8/130874493/01dd0046df172a.pdf
    • http://files.donandmargieabroard.com/uploads/1/3/1/3/131379443/7093538.pdf
    • http://files.meganmcgarrymusic.com/uploads/1/3/1/1/131164281/lifunek.pdf
    • http://files.shopcafeparis.com/uploads/1/3/1/3/131383943/lazid_fuwenifuzojure_wadutagoxekerur.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/7640/2854/files/53800035419.pdf
    • https://cdn.shopify.com/s/files/1/0437/8948/4189/files/structure_of_zika_virus.pdf
    • https://cdn.shopify.com/s/files/1/0431/8072/0294/files/85946497621.pdf
    • https://cdn.shopify.com/s/files/1/0430/9581/8404/files/74325110800.pdf
    • https://cdn.shopify.com/s/files/1/0430/9798/1089/files/jawuxerubotoderufolubudir.pdf
    • https://cdn.shopify.com/s/files/1/0435/5178/5109/files/jojagekakepuxagosama.pdf
    • https://cdn.shopify.com/s/files/1/0432/5684/0354/files/poulan_wild_thing_2375_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/0532/0088/files/satonenowopirulazerado.pdf
    • https://cdn.shopify.com/s/files/1/0437/7644/2530/files/metronome_for_android_phone.pdf
    • https://cdn.shopify.com/s/files/1/0428/8220/3811/files/mamesobifikute.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_off00006c10.bin
8f854fbccb558455b73d44f61e6bacc48cedb96832b4f9bee60c67d30b8fc67d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C10 5152 bytes
font_01_sfnt_off00007dcc.bin
6e03931b09f1585652660caa312c7c18c40b73a9069ba81b3488ff2e14e645ae
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DCC 10524 bytes