Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8c0bd7185191f0f…

MALICIOUS

PDF

49.7 KB Created: 2020-08-04 01:03:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 51c5ccee4394c1edca3bb2112e80aea4 SHA-1: a84a12a062b0e2e46fb90146eeb6619042b9bfaf SHA-256: e8c0bd7185191f0ff939862b9b3b4cfebe30ab70288faeeb89de4e18fa6b3aae
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was identified as malicious due to the presence of numerous embedded links. One critical heuristic firing indicates a link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=bob+ong+si+pdf'. Another critical heuristic identified a PDF link farm with 28 external PDF links, predominantly hosted on cdn.shopify.com. The document body contains garbled text but also includes the malicious URL, suggesting a lure to external content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.ru/pify?keyword=bob+ong+si+pdf In PDF document text
    • http://files.515worldwide.com/uploads/1/3/0/7/130776408/6980691.pdfIn PDF document text
    • http://files.jacquelinesalvador.com/uploads/1/3/0/8/130815437/7922258.pdfIn PDF document text
    • http://files.roberthortonphotography.com/uploads/1/3/0/8/130814605/toleg.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/1/0432/2462/9411/files/jikalanetenonok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5340/6618/files/selfcare._rr._com_change_password.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4316/8156/files/beatles_yesterday_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2100/9053/files/64658078535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1282/4993/files/bixewodusukuwuxodujatopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2312/2077/files/jixunitibofo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7210/8197/files/56005441141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4293/9814/files/wujozofuwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8211/3433/files/mp3_skype_recorder.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3161/6923/files/92823351526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4416/6037/files/julibedepo.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

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007100.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7100 5060 bytes
SHA-256: 9730e471cbebd006091b6b1cd32327fece582a0fe8b04dbbb4a35f92e0c5d7fe
font_01_sfnt_off00008254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8254 10028 bytes
SHA-256: 69b42e99d827062f82120e8dfb89a8c24300369d94dab89df11173c66c5da862
font_02_sfnt_off0000a4cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4CF 16144 bytes
SHA-256: c285fb7e0a468b536b5b50a218c3479f047524ad23ae0ce850d1b48518667c83

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