Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc18c901bb38f208…

MALICIOUS

PDF

46.0 KB Created: 2020-07-29 03:36:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0b15039c3330a03573d3acf1ce80563b SHA-1: cce8b4075658f400ac03ce2de93dbe1016b23599 SHA-256: dc18c901bb38f208b3ecebcc097676babf5b387a5de2508b467d0bb81090b096
152 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a technique often used to redirect users to malicious websites. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically identifies a link to ttraff.com as malicious, indicating a likely phishing or malware distribution attempt. The PDF_SEO_LINK_FARM heuristic further suggests a coordinated effort to distribute malicious content through a network of SEO-optimized PDFs. No scripts were extracted, but the presence of malicious redirector links is sufficient evidence for this assessment.

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=bacillus+subtilis+natto+pdf
    • http://files.bensawyermusic.co.uk/uploads/1/3/2/7/132740218/kelupotamevivok.pdf
    • http://files.taralocklearjewelryshop.com/uploads/1/3/1/3/131378852/9c3281e155f.pdf
    • http://files.diallubricants.com/uploads/1/3/0/7/130775484/7945611.pdf
    • http://files.diallubricants.com/upload
    • https://cdn.shopify.com/s/files/1/0431/2737/3986/files/komarozijenip.pdf
    • https://cdn.shopify.com/s/files/1/0434/0639/3496/files/juxiwas.pdf
    • https://cdn.shopify.com/s/files/1/0433/4705/0661/files/36664708031.pdf
    • https://cdn.shopify.com/s/files/1/0433/8306/2678/files/siwilipobora.pdf
    • https://cdn.shopify.com/s/files/1/0431/9671/1073/files/gimeg.pdf
    • https://cdn.shopify.com/s/files/1/0430/0154/4863/files/37714617336.pdf
    • https://cdn.shopify.com/s/files/1/0428/6647/5174/files/zoxuxuremikinesurobanijaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/jofepikumimazifanogatejab.pdf
    • https://cdn.shopify.com/s/files/1/0433/8280/0542/files/vipomidaborurimamoletu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/zudulopovuvute.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zaduvezumutup.pdf
    • https://cdn.shopify.com/s/files/1/0433/2004/9822/files/fubuzurulejikegefatiji.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/berujixawajibexuxutuzogar.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_off00007793.bin
2f2a60b582327a7f21d7406ef6295ded49571b6e47d109af1fd19af55ba5700f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7793 5008 bytes
font_01_sfnt_off00008895.bin
35180835864c5108c7133409eb690df33aacfe8a61dcc056b4cd76918e3657b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8895 9932 bytes

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