Malicious PDF — malware analysis report

Static analysis result for SHA-256 773a329918ea43f6…

MALICIOUS

PDF

57.6 KB Created: 2020-08-10 07:08:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8fce7dfd7d14a789e0b6bd8af9e7c53b SHA-1: f72a1c7742eeea2cee73a4aea39fdbd3d6b9017f SHA-256: 773a329918ea43f6343cc0fb55fb3f1b0aa5c696d9a2d7e982bdd99e9f3cc70f
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating it redirects to known malicious infrastructure via the URL https://ttraff.com/pify?keyword=b.+sc+1st+year+time+table+2020+pdf. This suggests a phishing or malware distribution attempt, masquerading as a timetable to entice clicks. The ML classifier also strongly indicated maliciousness.

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.com/pify?keyword=b.+sc+1st+year+time+table+2020+pdf In PDF document text
    • http://files.minilivestock.com/uploads/1/3/2/7/132740415/38a223c.pdfIn PDF document text
    • http://fejebi.amymaddoxphotography.com/uploads/1/3/1/1/131164250/8350555.pdfIn PDF document text
    • http://files.hiddenhispanicheritage.com/uploads/1/3/0/7/130740112/3515123.pdfIn PDF document text
    • http://files.riverranchgoldens.com/uploads/1/3/1/6/131607163/kiwefo_povisukuxadez_lixozibi.pdfIn PDF document text
    • http://files.brianchovanecknives.com/uploads/1/3/2/6/132681969/jukume.pdfIn PDF document text
    • http://fedorahosted.org/lohitIn 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/1/0430/8959/2473/files/sociology_of_religion_weber.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9251/2678/files/31810756126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0183/8757/files/55033886331.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6790/0061/files/calculus_of_variations_maccluer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0333/1231/files/tenojif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9358/9142/files/zinovugapiboja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5064/7204/files/28790124270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0820/4708/files/muxobivobovutezoriwatum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9363/8822/files/15172911583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8806/8254/files/34427248302.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0000b978.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xB978 9620 bytes
SHA-256: ca282bac2e525705c3799f79ef9bca629673211ae5508078f03e1c870d20bbcb
font_00_sfnt_off000077cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77CD 5948 bytes
SHA-256: 11331e926d963f8636a77fdeffe04d20c53a7f1cb0cc17720601fec1a2e805de
font_01_sfnt_off00008c0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C0A 3720 bytes
SHA-256: d5ecec3e822993868ba70e247019bcdb656a9fee58d620eb93bc70658e929280
font_02_sfnt_off0000976c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x976C 9852 bytes
SHA-256: 148ccd6a135146549bb9229188f5a2e4bb5cea5a63fa0f27df3154fdd8c8e555