Malicious PDF — malware analysis report

Static analysis result for SHA-256 8780ecc1ef10b792…

MALICIOUS

PDF

47.3 KB Created: 2020-08-11 23:44:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1945895df4610cb1b95573033b4b821a SHA-1: 97cb36a6ddf96b05369b199efcd96215fa9e0516 SHA-256: 8780ecc1ef10b792c77683adc1095eb616d0543da021e4a4c80e8506d608440a
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious domain, disguised as interview questions. The ML classifier strongly indicated maliciousness, and the presence of numerous links to external PDFs suggests a link farm or SEO poisoning attempt to lure victims. The document body itself contains garbled text but includes the malicious redirector URL.

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=tally+interview+questions+and+answers+for+freshers+pdf In PDF document text
    • http://files.goodlyframe.org/uploads/1/3/1/1/131164120/8563966.pdfIn PDF document text
    • http://vejatisir.egfhc.com/uploads/1/3/2/3/132303382/7971862.pdfIn PDF document text
    • http://files.eastprospectparade.org/uploads/1/3/1/3/131398406/4654654.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/1/0432/9956/9829/files/35086752374.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7141/4167/files/94799295248.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4687/8882/files/91550784775.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4595/1400/files/tetebinoxafewabevo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9506/4733/files/ditimifuxuxidowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/2046/2743/files/biomassa_de_banana_verde_beneficios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0386/1416/files/a_way_with_words_podcast.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0334/7097/files/83266057750.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6028/2023/files/navowaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6335/3250/files/30485076905.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5481/7690/files/juxigexozofojibo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3032/3095/files/tigebi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9118/2243/files/sally_beauty_employment_application.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000079dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79DD 5460 bytes
SHA-256: f339f79bd0ac692acd28f968e0105757b32bf6547cc88e8250fe619bd8372e38
font_01_sfnt_off00008c7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C7D 10224 bytes
SHA-256: 2109ece7ed20dece46519ff0bf40482ece128f8572502ce965beec67cfebe15d

Open this report in the interactive analyzer, or submit your own file for analysis.