Malicious PDF — malware analysis report

Static analysis result for SHA-256 0736eddebad9b944…

MALICIOUS

PDF

48.8 KB Created: 2020-08-09 23:33:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a1996bab1e5694f39035774062a6e76 SHA-1: 4bdf64ce6c1d7ccabcfaaee576ae4f704525881c SHA-256: 0736eddebad9b944d5e306258ceacaace389f7fa16760f418c01f234b1d258e5
154 Risk Score

Malware Insights

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

The PDF contains numerous links, with one specifically pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=preparation+of+cycloalkanes+pdf', suggesting a phishing or scam attempt. The ML classifier also strongly indicated maliciousness.

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=preparation+of+cycloalkanes+pdf
    • http://files.blresales.com/uploads/1/3/0/7/130776041/mapufuletos.pdf
    • http://files.thecriticalcouple.com/uploads/1/3/1/3/131398010/374af916e8181.pdf
    • http://fisujixu.projectbmep.com/uploads/1/3/1/3/131379578/pewijomudus.pdf
    • http://files.sapphirestarseedart.com/uploads/1/3/1/3/131379042/xunuwitatepataxofiru.pdf
    • http://files.weansweredthecallfilm.com/uploads/1/3/2/7/132741334/b948a9a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/9007/6057/files/38505402778.pdf
    • https://cdn.shopify.com/s/files/1/0429/1067/9203/files/kenigajatatupewivo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8502/8758/files/lupemoxefaxozorob.pdf
    • https://cdn.shopify.com/s/files/1/0440/0968/5157/files/11585025692.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/marifurozijuzaledenikegi.pdf
    • https://cdn.shopify.com/s/files/1/0438/3657/1805/files/dirt_devil_vacuum_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/6827/7415/files/kojevegadewuzirunifi.pdf
    • https://cdn.shopify.com/s/files/1/0436/5395/5742/files/gotavotosododutiwuko.pdf
    • https://cdn.shopify.com/s/files/1/0432/5667/6507/files/anti_hijacking_act_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/3308/4575/files/jidijedekavasejukowilu.pdf
    • https://cdn.shopify.com/s/files/1/0433/1651/0873/files/liste_capsules_nespresso.pdf
    • https://cdn.shopify.com/s/files/1/0431/1416/8480/files/bumupexidalepuzif.pdf
    • https://cdn.shopify.com/s/files/1/0433/5478/3893/files/reaction_mechanism_of_alkanes.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_off000080d5.bin
5635a454ba29fc493a699fcf83c6a4d243c0093c4a04f28fe05c18fd938589f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80D5 5316 bytes
font_01_sfnt_off00009305.bin
95bfa7c660a8df6ae1a17d220553831fc7eb9d239e9526103f5c4a846108a937		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9305 10208 bytes

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