Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffafa334d8b92843…

MALICIOUS

PDF

44.9 KB Created: 2020-08-04 07:14:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7cb4d65b54131ca48a454ed5865c57a1 SHA-1: c535b731bc7283f1849055ebf437f82ba23f8ba6 SHA-256: ffafa334d8b92843ac2ceb5435494adbf14db2a11981ce5bab10a72a8bb195eb
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic indicating it links to known malicious redirector infrastructure. The document body, though malformed, contains text related to 'bidding process for construction projects pdf' and includes the malicious URL. This suggests a phishing attempt to lure users to a malicious site under the guise of a legitimate document. No scripts were extracted from this sample.

Heuristics 3

  • 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.
  • 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=bidding+process+for+construction+projects+pdf
    • http://files.rubysresidences.com/uploads/1/3/0/8/130874394/toloxi-piruv.pdf
    • http://files.cambridgerugcleaning.com/uploads/1/3/1/4/131407138/7288648.pdf
    • http://files.tollersatoakcreekfarms.com/uploads/1/3/1/4/131406518/f07f34303.pdf
    • http://files.scvpta.org/uploads/1/3/1/0/131070457/pinezobu.pdf
    • http://files.taylorspersonalcarehome.com/uploads/1/3/1/4/131453276/bozol_sawaseriwe.pdf
    • https://cdn.shopify.com/s/files/1/0433/5216/2462/files/mokatiwalabidoxofajila.pdf
    • https://cdn.shopify.com/s/files/1/0434/0085/5706/files/lakutusuzidi.pdf
    • https://cdn.shopify.com/s/files/1/0429/7595/3049/files/padi_open_water_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/9569/5265/files/97888573170.pdf
    • https://cdn.shopify.com/s/files/1/0430/8543/0945/files/linogesifav.pdf
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/toridobuzoweluwifu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5625/0525/files/tesisavalopona.pdf
    • https://cdn.shopify.com/s/files/1/0438/2133/4688/files/waxejojamer.pdf
    • https://cdn.shopify.com/s/files/1/0434/1481/4885/files/sijimipumefi.pdf
    • https://cdn.shopify.com/s/files/1/0433/2562/0374/files/35870578765.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007053.bin
afd6daa24f5fdd3d7f9d7f7f5a363bdb14e24172bf0f0fdf0e81e49d928812ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7053 5208 bytes
font_01_sfnt_off0000822c.bin
b740d627ab1729323ad675640bf7e4652f84b0c88cf9b08caf4dfa58a3d89456		 pdf-font-stream PDF embedded font (sfnt) at offset 0x822C 10728 bytes

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