Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c44f36db0dfbbb0…

MALICIOUS

PDF

45.5 KB Created: 2020-08-10 15:36:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f0a642f5747dcf43f00f7881632ce233 SHA-1: c1575cd9dce0272beb5ccdb491a77303c0e46417 SHA-256: 9c44f36db0dfbbb0af047e75923115a44474f0eb0a9528ed2e4c473501a9fc29
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.com/pify?keyword=digestive+system+parts+and+functions+pdf. The document body, though heavily obfuscated, also contains this URL, suggesting a lure to external content. The presence of multiple links to external PDFs, many hosted on Shopify, indicates a link farm strategy, likely for SEO manipulation or to distribute 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=digestive+system+parts+and+functions+pdf
    • http://matuf.funmazingrentals.com/uploads/1/3/1/4/131409090/lijebos-sewuzukikusaze-kamejevazatufun-mobexikovejolo.pdf
    • http://files.gfox-insurance-agency.com/uploads/1/3/2/8/132815206/gojuwewajogenev_domuke_toveg_tipunen.pdf
    • http://files.boktouchforhealth.com/uploads/1/3/0/7/130775320/6423273.pdf
    • http://files.stpatricksripon.com/uploads/1/3/1/8/131856772/9826839.pdf
    • http://files.bamabelle.org/uploads/1/3/2/3/132303378/nediperixigevo-fizokut.pdf
    • https://cdn.shopify.com/s/files/1/0452/8229/5969/files/bienestar_emocional_en_adultos_mayores.pdf
    • https://cdn.shopify.com/s/files/1/0433/8637/2246/files/natefe.pdf
    • https://cdn.shopify.com/s/files/1/0440/0994/7301/files/detalunibemav.pdf
    • https://cdn.shopify.com/s/files/1/0440/5254/5701/files/que_es_composicion_corporal.pdf
    • https://cdn.shopify.com/s/files/1/0433/8896/0919/files/70129524470.pdf
    • https://cdn.shopify.com/s/files/1/0433/6192/7318/files/80777878552.pdf
    • https://cdn.shopify.com/s/files/1/0432/6676/9051/files/tedapame.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1741436775.pdf
    • https://cdn.shopify.com/s/files/1/0431/6630/2357/files/53635049356.pdf
    • https://cdn.shopify.com/s/files/1/0434/4132/4184/files/vector_tower_defense.pdf
    • https://cdn.shopify.com/s/files/1/0436/7309/2246/files/pegipumuzo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5546/4104/files/58328371086.pdf
    • https://cdn.shopify.com/s/files/1/0431/2160/6820/files/11502733781.pdf
    • https://cdn.shopify.com/s/files/1/0428/6663/9014/files/pefejobekafivexuvaxifiw.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_off00007375.bin
90266ef605fa815c45931c680092468f2396040972ba8e182d6419daa2b189fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7375 5604 bytes
font_01_sfnt_off0000867a.bin
780851db6baa09d2533a8e851babb8260293154e6ce2d462480a0d3e2bcf636a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x867A 9992 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.