Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bae9042c828aac1…

MALICIOUS

PDF

53.2 KB Created: 2020-08-19 16:00:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fa45bf575a9d8df1038987e7977bdcc6 SHA-1: 0e46d87ade2eda64e4cc8e1b6ee8fa27093e31f3 SHA-256: 8bae9042c828aac12a829d59bce41693b8359e9143d39bd6021ab55534c7ca73
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=merriam+webster+dictionary+free'. Additionally, it features a PDF link farm heuristic, indicating a large number of external links, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily corrupted, contains fragments of the malicious URL and other Shopify links, reinforcing the redirection attempt.

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.cc/pify?keyword=merriam+webster+dictionary+free In PDF document text
    • http://rufuranav.philmancusi.com/uploads/1/3/2/7/132710714/degotuvi.pdfIn PDF document text
    • http://files.granbyag.org/uploads/1/3/0/7/130739239/fajakamekafuk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4608/2472/files/46668448211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9960/9505/files/polymerase_chain_reaction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1334/0312/files/66111399401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2725/0850/files/20165847867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3796/5986/files/rimworld_a16_mods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2266/1278/files/chinese_visa_form_perth.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0392/6938/files/kifal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0230/6468/files/dagijikazubago.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6385/9610/files/the_ripple_effect_greg_wells.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3577/7445/files/ayyappan_songs_free_yesudas_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2356/4957/files/ham_radio_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2627/6775/files/waletumavelojinibuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/switzerland_crs_reporting_countries.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000621a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x621A 5264 bytes
SHA-256: 2b16878efb083ad5144c7b4a80df71256cf00c9c31a756b67828b9dad43d9d4b
font_01_sfnt_off000073eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73EB 1936 bytes
SHA-256: cf50d13c5c21d2e34fba0d9dd21119d4839fc35fdaebfe62cbacf51850cc328d
font_02_sfnt_off00007d2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D2A 10748 bytes
SHA-256: e447272d0f064969698c2373e1270056f68c60878b26138c20d54a15de8d326c
font_03_sfnt_off0000a1f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1F0 16820 bytes
SHA-256: 9c0f9d257bc7da6223548c8ccacc9507412696804e36b62896ad6684a812f4c3
font_04_sfnt_off0000b8e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8E4 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3