Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb4863ea38d178e6…

MALICIOUS

PDF

46.8 KB Created: 2020-08-05 02:33:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d184c3a0fde225fbd9647ba6bac9f4f2 SHA-1: d4d8a30f54f0388586e0f1d176e0c82f0e862e4c SHA-256: bb4863ea38d178e6efb5a96f870dcf899c93662b4f3c549a8c868e85ee6dcc4a
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of a link farm used to obscure malicious redirects. The primary malicious URL identified is 'https://ttraff.ru/pify?keyword=gta+vice+city+san+andreas+cheat+codes+pdf', which is linked to known malicious redirector infrastructure. The document body, though partially corrupted, suggests a lure related to 'Gta vice city san andreas cheat codes pdf'.

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.ru/pify?keyword=gta+vice+city+san+andreas+cheat+codes+pdf
    • http://files.katiewoodsdesign.com/uploads/1/3/0/9/130969498/8084402.pdf
    • http://files.westwaweimclub.org/uploads/1/3/1/4/131453451/ruvipelujojepo_zofizekemuk.pdf
    • http://files.sparkrentals.ca/uploads/1/3/0/9/130969440/84c14221.pdf
    • http://files.backrowradio.com/uploads/1/3/1/1/131164048/mumasijoxobi.pdf
    • http://files.betreatedwell.com/uploads/1/3/1/3/131398362/6703297.pdf
    • https://cdn.shopify.com/s/files/1/0436/3078/8758/files/rapuxawefusevis.pdf
    • https://cdn.shopify.com/s/files/1/0429/1883/8435/files/bobekezumopitowetinudu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/ftb_interactions_mod_list.pdf
    • https://cdn.shopify.com/s/files/1/0432/0890/0768/files/18232298549.pdf
    • https://cdn.shopify.com/s/files/1/0429/9915/2799/files/53431261349.pdf
    • https://cdn.shopify.com/s/files/1/0432/6083/8050/files/90018141625.pdf
    • https://cdn.shopify.com/s/files/1/0430/8844/5604/files/jisefevekepagafiwafaru.pdf
    • https://cdn.shopify.com/s/files/1/0430/6799/8359/files/tabixitijiduwet.pdf
    • https://cdn.shopify.com/s/files/1/0430/9952/1178/files/54823063708.pdf
    • https://cdn.shopify.com/s/files/1/0430/5171/2666/files/bonulewa.pdf
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/naganivobenumevatalil.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3854/files/62542891509.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_off00006bb1.bin
443b6a27a50e1a56fde8f01ad3762da212331124454a400b27a91c3c4a2fa165		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BB1 5192 bytes
font_01_sfnt_off00007d5b.bin
05ba8f92cf9dcb67892246afcd4ef95be2033d371102b5e3fed7cf97adcb762d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D5B 10112 bytes
font_02_sfnt_off00009fe2.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FE2 4324 bytes

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