Malicious PDF — malware analysis report

Static analysis result for SHA-256 832c165ddcc49fab…

MALICIOUS

PDF

68.9 KB Created: 2020-08-11 07:37:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ab05597c8c34b007253cbcc8f1add2b9 SHA-1: a57af75f32e260259b6bc052a0ef742543decfd6 SHA-256: 832c165ddcc49fabd3624743dcd0ef631c2cc20bc01ec9505ae8374aecd6929f
202 Risk Score

Malware Insights

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

The PDF contains a lure to download a novel, which includes a link to a redirector service. This redirector, 'ttraff.cc', is known to point to malicious infrastructure. The document also contains a large number of links to other PDFs, suggesting a link farm or SEO abuse tactic. The ML classifier strongly indicated maliciousness.

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=download+novel+hunger+games+bahasa+indonesia+pdf In PDF document text
    • http://files.yorktonfarmersmarket.ca/uploads/1/3/1/8/131857580/2630053.pdfIn PDF document text
    • http://files.lperfumeriallc.com/uploads/1/3/2/3/132303013/manuvegawod-gumolunupevoto-lulat.pdfIn PDF document text
    • http://files.jpsousanhsband.com/uploads/1/3/1/8/131871786/godiseraviduzimumuw.pdfIn PDF document text
    • http://files.5degreespsychotherapy.com/uploads/1/3/1/4/131454221/8b14fd1e06.pdfIn PDF document text
    • http://files.hccbillings.org/uploads/1/3/1/3/131398100/fuxejirevizigoj.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/1/0429/1251/4201/files/ritiremujese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1970/6269/files/88113577830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8122/7670/files/dosesof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6173/0719/files/90809904764.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4976/2459/files/causes_of_addiction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0679/4656/files/case_study_marketing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9017/3349/files/destination_unknown_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4973/8650/files/pafolitazilemeje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9581/8397/files/jaloregozasifesimanazep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3590/1602/files/56358198972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9427/0371/files/guvalepevipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0781/8398/files/python_capitalize_first_letter_of_each_word.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF8B 5744 bytes
SHA-256: 22dcda085a73b327e742bf9c594a71090294bd3f0586bec7cd58d55d85513ae4
font_01_sfnt_off0000e300.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE300 10316 bytes
SHA-256: 38868212fdab3360499fe9943e93cdc85ab848c5e89814c71b4bed1892acbaee