Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d339933272ca3fd…

MALICIOUS

PDF

48.1 KB Created: 2020-08-14 14:45:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1901be2da02064c96978576c01c49f53 SHA-1: b2cf941cd0a822809f79cbc988a3e9f1d7c97029 SHA-256: 0d339933272ca3fdc954458eec7da0d6ff9dbbd55edc4ac7abdfdb598f9cf0c0
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service designed to obscure the final destination. The primary malicious link, https://ttraff.cc/pify?keyword=software++for+laptop+windows+10, is presented as a software download, indicating a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external links suggests a link farm or SEO manipulation tactic to distribute 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.cc/pify?keyword=software++for+laptop+windows+10
    • http://fovukogo.premshudosho.com/uploads/1/3/0/7/130739695/5451031.pdf
    • http://files.jerryjonesguitars.com/uploads/1/3/2/6/132681436/fapixumiwezewip_zuvetuwigapikim.pdf
    • http://files.leslie-sterling.com/uploads/1/3/0/9/130969308/lozuraje-luwafutanosasol-joxupufekebegu.pdf
    • http://files.riversidepopupgallery.com/uploads/1/3/2/3/132303019/3590f066a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0440/0798/1214/files/1562241269.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/7868051279.pdf
    • https://cdn.shopify.com/s/files/1/0428/5769/3347/files/42451254971.pdf
    • https://cdn.shopify.com/s/files/1/0445/6900/2143/files/atkins_quimica.pdf
    • https://cdn.shopify.com/s/files/1/0430/0098/7811/files/3654031286.pdf
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/person_centred_theory_in_counselling.pdf
    • https://cdn.shopify.com/s/files/1/0431/6263/2360/files/atlas_d_anatomie_humaine_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/0981/0343/files/xekabumuvotasugela.pdf
    • https://cdn.shopify.com/s/files/1/0428/8725/0087/files/minecraft_rpg_mods.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/28253930435.pdf
    • https://cdn.shopify.com/s/files/1/0433/4331/5102/files/6251987731.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_off00007c1d.bin
90df33b2dfdd395b70bce474563db87ef368b1b1a2a1831856ffef68c8d0d2b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C1D 5424 bytes
font_01_sfnt_off00008ea8.bin
275daf3145395a8d0a266f0606814db26bda180589f7a3aa99b96746bece1ed3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA8 10704 bytes

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