Malicious PDF — malware analysis report

Static analysis result for SHA-256 78948e1c38e94801…

MALICIOUS

PDF

44.3 KB Created: 2020-08-10 10:12:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e93a69ea46239b11c768b5dfed2be664 SHA-1: b8325eef4a9581e3d0d7eab6c309fe2ad54db249 SHA-256: 78948e1c38e9480179382876732f5734ba548962e984345b276177d0dab408ad
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, including one pointing to a known malicious redirector at 'ttraff.com'. The document body text, though garbled, includes phrases like 'the beatles lyrics pdf download' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of a large number of external PDF links also indicates a link farm, a common tactic for SEO poisoning and traffic 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.com/pify?keyword=the+beatles+lyrics+pdf+download
    • http://tisosip.wheaten.se/uploads/1/3/0/7/130775732/9ba9f6f.pdf
    • http://files.santadotfe.com/uploads/1/3/1/4/131454316/917ca73c4d9.pdf
    • http://files.holsteinstatetheatre.com/uploads/1/3/1/3/131382583/fagudolapepiwe_toxesefopaseka_zuzeva_jikuga.pdf
    • http://tabibixo.redroostergrill.com/uploads/1/3/2/7/132740405/5391850.pdf
    • http://files.sweetmonroesbakery.com/uploads/1/3/2/6/132681586/46370af9879e36.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/1129/2827/files/23899415113.pdf
    • https://cdn.shopify.com/s/files/1/0427/6345/2583/files/16098473140.pdf
    • https://cdn.shopify.com/s/files/1/0431/7016/8992/files/center_parcs_elveden_forest_map.pdf
    • https://cdn.shopify.com/s/files/1/0432/5926/5188/files/36500488865.pdf
    • https://cdn.shopify.com/s/files/1/0435/7590/2363/files/52902094501.pdf
    • https://cdn.shopify.com/s/files/1/0437/7955/5486/files/keguwiri.pdf
    • https://cdn.shopify.com/s/files/1/0433/3387/7914/files/lusaselegipe.pdf
    • https://cdn.shopify.com/s/files/1/0437/2276/8535/files/kunci_jawaban_dasar_dasar_akuntansi_jilid_2_edisi_7.pdf
    • https://cdn.shopify.com/s/files/1/0432/6624/4764/files/fisopelonenivirelomim.pdf
    • https://cdn.shopify.com/s/files/1/0428/5857/8086/files/fadufasu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7473/9607/files/rukogijoguwibafakoj.pdf
    • https://cdn.shopify.com/s/files/1/0429/1146/5638/files/85250290672.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_off00006ebb.bin
06d72d67259ae171a1b9a6b4278ada1b2743fdb3142851bb165259c123d2ccb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EBB 5528 bytes
font_01_sfnt_off0000818f.bin
f92ac021031dfa9cbde4aa120eac8f3f917c462778bae9a229f8e3994ba66c55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x818F 10120 bytes

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