Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ace7283f13c455f…

MALICIOUS

PDF

63.8 KB Created: 2020-08-01 11:39:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9c69079954b7045a03f2c305c11db071 SHA-1: 66aa9c815eae4d05bbe7c9978fd30537b25712e4 SHA-256: 1ace7283f13c455f91bf9dfff2b4abd5ef8e9af1dff029008c5ce503b68c9adc
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a high number of embedded links, many of which point to a redirector service known to host malicious content. The document body contains a large number of these links, suggesting a link farm or SEO poisoning tactic. The primary malicious URL identified is https://ttraff.cc/pify?keyword=heartstrings%2528+south+korean+tv+series%2529. No scripts were extracted, limiting the analysis of direct payload execution.

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=heartstrings%2528+south+korean+tv+series%2529 In PDF document text
    • http://files.srmsperformingarts.com/uploads/1/3/1/4/131483327/8934d89145.pdfIn PDF document text
    • http://files.mysidetabledrawer.com/uploads/1/3/1/3/131379057/siwevafuketama.pdfIn PDF document text
    • http://files.stephaniegalyon.com/uploads/1/3/0/8/130874509/mokuliwomakerisumi.pdfIn PDF document text
    • http://files.hannahsealy.com/uploads/1/3/0/7/130739525/7b4568.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/1/0432/1515/9458/files/beep_sound_effect_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5874/7800/files/napoziwuwululupivasozuser.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9888/9635/files/rotofusowurim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9246/7109/files/68189148344.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5965/8398/files/27485880602.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9203/4211/files/14585347606.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7678/8117/files/10285975884.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0549/2904/files/1147846207.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5109/6984/files/64728753464.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6006/0567/files/4199877323.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1479/7981/files/napunutikodurimok.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 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_off0000958a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x958A 11996 bytes
SHA-256: 28c546db62d64a920107f5314acdbe2e63f3122316547d07e283c51f36232c3a
font_01_sfnt_off0000baf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAF1 5152 bytes
SHA-256: efa848bf78a19dd7068b7a4af2a7ee87cfc6177e306f6bb8e530e67a8c9f3168
font_02_sfnt_off0000cc89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC89 10824 bytes
SHA-256: 7e03a8957745ace0173f6f43c839ebc8a66bcb007a09261f61cce278f074b3d1

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