Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcbe6e81cfda67c6…

MALICIOUS

PDF

55.1 KB Created: 2020-07-27 18:53:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2c6660b3b30ad0589eb84fae338ef8e0 SHA-1: 081555b1373df374adbb0bc96206c585afc6342e SHA-256: bcbe6e81cfda67c6e243d76a522529f559721e9778124306005fc0d11b29a3d6
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a link to a redirector URL, which is a common tactic for delivering malicious payloads. The document body, though heavily obfuscated, appears to be a lure for a movie download, aligning with the 'SE_DOWNLOAD_BUTTON' heuristic. The presence of numerous external PDF links suggests a link farm used for SEO poisoning or traffic redirection. The primary malicious URL identified is ttraff.cc.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=bhagam+bhag+full+movie++720p+worldfree4u In PDF document text
    • http://files.sathiavanee-veeramoothoo.com/uploads/1/3/1/8/131871891/jidutemepupaz.pdfIn PDF document text
    • http://files.magnusfriberg.com/uploads/1/3/1/8/131856333/8048243.pdfIn PDF document text
    • http://files.mathgeekroadshow.com/uploads/1/3/1/4/131438423/detupevowemepob.pdfIn PDF document text
    • http://files.vintageinfused.net/uploads/1/3/0/7/130775645/5a21a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1385/7692/files/suporigasotabugoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1231/6584/files/buxetetobukenojulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1451/9966/files/35257598261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7940/1623/files/vapederuwejawux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5513/7447/files/53768214694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/peregomosurexezobosezob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2586/6662/files/41205120085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7503/4520/files/42714158860.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6166/files/33784864889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5184/3737/files/32802619821.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ecf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ECF 5756 bytes
SHA-256: 573a8d128b2679e4eb17d84ce993275eec333987bb350eb92422df597268e245
font_01_sfnt_off00009287.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9287 11452 bytes
SHA-256: 4dd7dca412e9a34fe1bfa780286a4f7f0303a35a636260e684604d1518e6bcf1
font_02_sfnt_off0000b999.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB999 16104 bytes
SHA-256: c6d177dd30d395e9060e148723578c55e109ed4275642439632739a62bb8e54c