Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e1629b3a4f69d49…

MALICIOUS

PDF

47.9 KB Created: 2020-08-08 15:16:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 856a5956ff62266340b422f0894f1fe8 SHA-1: 670d56bd6c9f73b9b3e2a163b3990869162944e0 SHA-256: 0e1629b3a4f69d497d451c22e22ac566d36a8c455aaf216b667052efec708685
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links, including one pointing to a known malicious redirector at 'ttraff.com'. The document body, though partially obfuscated, includes the URL 'https://ttraff.com/pify?keyword=s%25C5%2582ownictwo+angielski+poziom+c1+pdf', suggesting a lure to a phishing or malware distribution site. The presence of a large number of external PDF links also indicates a link farm, a common tactic for SEO manipulation or distributing 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=s%25C5%2582ownictwo+angielski+poziom+c1+pdf
    • http://files.royaljudaica.com/uploads/1/3/1/8/131856039/dededaxiped.pdf
    • http://files.kelly-maryanski.com/uploads/1/3/1/4/131407901/zubeb_besaj.pdf
    • http://files.fasteddiesworldofspeed.com/uploads/1/3/1/8/131856365/8492d7d1b.pdf
    • http://files.mendonillinois.com/uploads/1/3/0/7/130739169/8391233.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/7678/8117/files/30115422246.pdf
    • https://cdn.shopify.com/s/files/1/0436/0011/7928/files/chmod_in_windows.pdf
    • https://cdn.shopify.com/s/files/1/0432/4642/0136/files/malos_habitos_alimenticios.pdf
    • https://cdn.shopify.com/s/files/1/0431/4405/2898/files/60068198112.pdf
    • https://cdn.shopify.com/s/files/1/0430/8838/0061/files/85750302414.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/rekosudagojepez.pdf
    • https://cdn.shopify.com/s/files/1/0434/8103/9013/files/xamuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/8530/7808/files/15249200828.pdf
    • https://cdn.shopify.com/s/files/1/0429/9803/8679/files/jujukizegubarufazoloka.pdf
    • https://cdn.shopify.com/s/files/1/0430/3929/3593/files/kcet_solved_question_papers.pdf
    • https://cdn.shopify.com/s/files/1/0433/1651/0873/files/43934843940.pdf
    • https://cdn.shopify.com/s/files/1/0434/1301/2630/files/sojagopabarelejujida.pdf
    • https://cdn.shopify.com/s/files/1/0428/8184/3353/files/29396540135.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99231100330.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8095/files/brennan_manning_ragamuffin_gospel.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_off0000774c.bin
034fbc327df0aa1572e8b2f8eb577024c00f0923a1b371f69ba15a1f720dc8d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x774C 5796 bytes
font_01_sfnt_off00008b32.bin
560fa5841e5cd42a4a144cafdffec076793256b2d3b946e577a521053e3b8ff8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B32 11808 bytes

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