Malicious PDF — malware analysis report

Static analysis result for SHA-256 bff0dd159cf15379…

MALICIOUS

PDF

41.1 KB Created: 2020-08-15 03:20:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 647b84fa96706327eadadbcf806c461e SHA-1: 0eece6144b50decc5728d1cd0fc1b32e7f5d9306 SHA-256: bff0dd159cf15379336206cfbd88c4399aef6e29d65af32bcc52d0c692d58938
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources, a technique often used for SEO poisoning or to redirect users to malicious sites. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=akinator+apk+android+2.+3'. The document body also contains text related to 'Akinator apk android 2.3', suggesting a lure to download potentially unwanted or malicious software.

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=akinator+apk+android+2.+3 In PDF document text
    • http://files.unitedtaxiorg.org/uploads/1/3/0/7/130738969/fuzuven-pegavolo-lunuladexirot-zivuwikej.pdfIn PDF document text
    • http://tuluzoluv.cinquegranelli.com/uploads/1/3/1/4/131438667/ffec55e4d49.pdfIn PDF document text
    • http://files.protononprofit.com/uploads/1/3/0/7/130775753/taxixirifaden_togig_vesirut.pdfIn PDF document text
    • http://files.thebackyardkitchenmhk.com/uploads/1/3/0/7/130739214/wokulekalevedejawu.pdfIn PDF document text
    • http://kaleba.joshandsue.com.au/uploads/1/3/2/6/132695569/7085775.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/1/0428/0962/2687/files/pdf_of_candlestick_chart_pattern.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kovutuku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9910/3136/files/avengers_2019_full_movie_in_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5117/1478/files/xumopotawuxoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6821/9799/files/wemanu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0319/9138/files/blitzer_college_algebra_6th_edition_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6972/5080/files/pobuxagopusotezar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6935/7728/files/10368415243.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3135/5807/files/17229196824.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 3

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_off00006274.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6274 5124 bytes
SHA-256: 1f3650825cfb35e0ddd7cd5f02552e70873beabaf15c89db4fa71d1f28d9007d
font_01_sfnt_off000073f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73F4 10572 bytes
SHA-256: 7cd1d653b2361d04ab03b3d9f27b90d59f57b3e3dc67ae277951695c0bc6683e

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