Malicious PDF — malware analysis report

Static analysis result for SHA-256 71b8270bcded14e1…

MALICIOUS

PDF

54.7 KB Created: 2020-08-09 23:19:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f5777e59b97dbf3069500a69126e9c79 SHA-1: 07d650fa65bf459a0ecb439140908b0932cf9c5b SHA-256: 71b8270bcded14e1bb38b2ef9e82785d8c34d86d9dfcb21abc90f29810594589
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 pointing to external PDF files hosted on various domains, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to known malicious redirector infrastructure at `https://ttraff.cc/pify?keyword=adenosine+deaminase+deficiency+pdf`. While no scripts were explicitly extracted, the PDF structure and embedded links strongly indicate an attempt to redirect users to malicious content, likely for phishing or malware delivery.

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=adenosine+deaminase+deficiency+pdf
    • http://files.gracechristianmusicfestival.com/uploads/1/3/1/6/131606118/wasuzizen.pdf
    • http://files.diamondavestudios.com/uploads/1/3/1/3/131397946/zivokuwej-lejawimez-pekejidowevex.pdf
    • http://files.mslangseportfolio.org/uploads/1/3/1/6/131606487/babezopadefekuruve.pdf
    • http://tafobizat.bowlrevs.com/uploads/1/3/1/0/131070331/bavuviwizokes_nofolake_zigatasudunib_xuzuvaw.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/2848/0154/files/moxoruwuwunimojabiwepex.pdf
    • https://cdn.shopify.com/s/files/1/0437/8719/0430/files/biposelaninekidufuvubarid.pdf
    • https://cdn.shopify.com/s/files/1/0428/3337/9487/files/50594216964.pdf
    • https://cdn.shopify.com/s/files/1/0430/8841/2836/files/ninuwuluv.pdf
    • https://cdn.shopify.com/s/files/1/0433/9964/3286/files/2645693720.pdf
    • https://cdn.shopify.com/s/files/1/0435/4749/2506/files/jebowivajoxedov.pdf
    • https://cdn.shopify.com/s/files/1/0430/6200/1825/files/raligibofupedobogafexubuj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41267837863.pdf
    • https://cdn.shopify.com/s/files/1/0433/7503/4520/files/lojilejol.pdf
    • https://cdn.shopify.com/s/files/1/0429/5327/7603/files/sim_sity_3000_download.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_off00008f83.bin
93108f2f225b8da0717604721e14e9484e1d6b0fa7e9d324ea0b3b6217b4e07e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F83 5264 bytes
font_01_sfnt_off0000a16e.bin
14f406a557cfe8350f534a12b5c706bcf57a3f299b093c01a62935e4f46bedea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA16E 14544 bytes

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