Malicious PDF — malware analysis report

Static analysis result for SHA-256 6736e4fde46fad02…

MALICIOUS

PDF

43.4 KB Created: 2020-08-04 02:45:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3eedc47c2268c580fb534b0c704b623d SHA-1: 18559cdf71782c23bda366372fbc8a807a073727 SHA-256: 6736e4fde46fad02e668ac954de8a23eda4baccb7a8f15b251197d84a2912859
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The primary malicious URL identified is https://ttraff.cc/pify?keyword=elicitation+and+collaboration+pdf, which is flagged as a malicious redirector. The document's structure suggests it is designed to act as a link farm, potentially for SEO manipulation or to distribute further malicious content. No scripts were extracted, but the presence of numerous links indicates a strong intent to redirect users to potentially harmful sites.

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.cc/pify?keyword=elicitation+and+collaboration+pdf
    • http://files.flashlyfephotography.com/uploads/1/3/2/6/132695734/vemikevupubakavojeti.pdf
    • http://files.betapichaptertx.com/uploads/1/3/1/0/131070247/5385819.pdf
    • http://files.greenhillspediatrictherapy.com/uploads/1/3/2/8/132814900/rapej-tipafovelonas-femazegen-duniguwiv.pdf
    • http://files.cherylanncooke.com/uploads/1/3/0/7/130739524/1131802.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/6083/8050/files/15197911807.pdf
    • https://cdn.shopify.com/s/files/1/0430/7111/1330/files/sad_lenny_face.pdf
    • https://cdn.shopify.com/s/files/1/0428/8688/9639/files/xulufiweke.pdf
    • https://cdn.shopify.com/s/files/1/0434/0930/9848/files/air_pollution_control_cooper_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0432/4111/1716/files/jesokufapiwedilegut.pdf
    • https://cdn.shopify.com/s/files/1/0431/5529/2322/files/8122659610.pdf
    • https://cdn.shopify.com/s/files/1/0432/5346/5243/files/how_to_make_nox_run_faster.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/82973104521.pdf
    • https://cdn.shopify.com/s/files/1/0436/0637/6611/files/bluestax_shut_off_ads.pdf
    • https://cdn.shopify.com/s/files/1/0436/6696/4630/files/kulodebifelawiz.pdf
    • https://cdn.shopify.com/s/files/1/0437/5855/1189/files/39308060907.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_off00006160.bin
3595e2923613845ecfaddae79fbb6e3a52ac4cfa9c92ca356b222c63209d50ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6160 5068 bytes
font_01_sfnt_off000072a9.bin
1b46e9cdb8d067ff01d0e0c6ad04c0da5d1e16415f6317dcf73b3236da1be891		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72A9 14560 bytes

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