Malicious PDF — malware analysis report

Static analysis result for SHA-256 69d6d660ef68c068…

MALICIOUS

PDF

34.7 KB Created: 2020-08-14 15:06:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 26a2ec119662f627e30cd0b08e8c8fa6 SHA-1: 299e20ad94f60d500bf6d41b47d6fd2143035e35 SHA-256: 69d6d660ef68c068338b765f94b7ae759b29bdaaf04e96a69edcf61d206d3f86
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for 'army mission java games' and includes the malicious URL. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of it being used for phishing or malware distribution.

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=army+mission+java+games
    • http://pafekem.uwfkappasigma.org/uploads/1/3/0/9/130968984/87117.pdf
    • http://files.lhfieldfamilyfdn.org/uploads/1/3/1/4/131437216/lifojasukipitaf.pdf
    • http://vureni.katievanark.com/uploads/1/3/1/4/131412032/dozegonanabisa-lonekisod-xuzopinopuvu-nevud.pdf
    • http://files.alininspirations.com/uploads/1/3/1/4/131453645/dacebe4e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/6972/6110/files/95537534992.pdf
    • https://cdn.shopify.com/s/files/1/0433/9728/3992/files/amway_atmosphere_drive.pdf
    • https://cdn.shopify.com/s/files/1/0435/7446/0579/files/fekokog.pdf
    • https://cdn.shopify.com/s/files/1/0440/5752/6437/files/74775488417.pdf
    • https://cdn.shopify.com/s/files/1/0437/4216/7194/files/vmware_fusion_for_mac.pdf
    • https://cdn.shopify.com/s/files/1/0429/5655/4394/files/77022398357.pdf
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/wosejitinagadijoxasowe.pdf
    • https://cdn.shopify.com/s/files/1/0429/6091/2537/files/meiosis_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0434/5525/0598/files/faxubifafafibebasotosob.pdf
    • https://cdn.shopify.com/s/files/1/0437/7110/1338/files/xodexirepej.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_off0000494b.bin
9965ba4880646537f617bce889f9c183e2522fb75262081eecf89df3a48195c0
pdf-font-stream PDF embedded font (sfnt) at offset 0x494B 5200 bytes
font_01_sfnt_off00005afa.bin
880fa6893adacdaf6b0c4a3c36d99624efaa739a60b964e327561eb4d36da734
pdf-font-stream PDF embedded font (sfnt) at offset 0x5AFA 10372 bytes