Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d0ffbe8c4c2eee9…

MALICIOUS

PDF

45.5 KB Created: 2020-08-10 07:58:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: beee2c6256e220e5d1da1bb63ca52e63 SHA-1: 34b4021abe112edbe157584c9606d353c148874d SHA-256: 6d0ffbe8c4c2eee97c17c84e2984d88da7287da5cb7c5cc52ea279bd33236d8c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including one identified as a malicious redirector to 'ttraff.com'. The document body, though obfuscated, includes the text 'Atoms structure worksheet pdf', suggesting a lure to trick users into clicking the malicious link. The presence of a large number of external PDF links also indicates a link farm, likely for SEO manipulation or to host further malicious content.

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=atoms+structure+worksheet+pdf
    • http://files.donaldtrumpacunt.com/uploads/1/3/1/0/131070859/7520e1f8.pdf
    • http://files.dreamcatchermeadow.com/uploads/1/3/1/4/131406781/rinudovesa-zetija-zenuxoselipafuj.pdf
    • http://gewot.thebrowniecottage.com/uploads/1/3/1/4/131483281/jopudigobuvodokobez.pdf
    • http://files.influencersg.com/uploads/1/3/2/3/132302888/e536e3.pdf
    • http://files.largeandpage.com/uploads/1/3/0/8/130815228/vajekopikirobut.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/5804/4827/files/21425611237.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/74152395571.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/niwaxesajikibulunetegidu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4674/7803/files/wewuzelegasupijuzifog.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jaxigosileworu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6265/6157/files/41454738640.pdf
    • https://cdn.shopify.com/s/files/1/0434/3165/7621/files/71810667437.pdf
    • https://cdn.shopify.com/s/files/1/0434/3490/1671/files/d_d_complete_scoundrel.pdf
    • https://cdn.shopify.com/s/files/1/0438/2208/8354/files/mazixedizimanonifa.pdf
    • https://cdn.shopify.com/s/files/1/0437/8152/1569/files/bsc_mlt_syllabus_2020.pdf
    • https://cdn.shopify.com/s/files/1/0429/8306/3715/files/ccdp_arch_300_320_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9763/7535/files/bupovixetogokogefuloj.pdf
    • https://cdn.shopify.com/s/files/1/0433/3069/9414/files/47440249612.pdf
    • https://cdn.shopify.com/s/files/1/0433/4757/4943/files/bipadanitonewefilapuse.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_off0000662e.bin
29680e449f0407a4745cd336ee66fe7d337ee78fea7f407a444ec98cab46984a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x662E 5024 bytes
font_01_sfnt_off0000775c.bin
c6cc3acac083b1774fea172e4bcb27eaa86301b9ef8ce2c3639e6aa865fed43f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x775C 10356 bytes
font_02_sfnt_off00009ad3.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AD3 4324 bytes

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