Malicious PDF — malware analysis report

Static analysis result for SHA-256 93351af1d61f721f…

MALICIOUS

PDF

40.0 KB Created: 2020-08-14 02:43:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6f969b4c33157dab29dbc98c3930101e SHA-1: 82800847aac3aa01b245cd9ef5e751bfd7740d87 SHA-256: 93351af1d61f721fd92db26ac5633d6d5c96b78c54036348dfeed8cdabf1cdac
194 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external PDF files hosted on various domains, suggesting a link farm for SEO manipulation or to obscure malicious redirects. One critical heuristic firing indicates a direct link to a known malicious redirector, ttraff.com, which is further contextualized by the document body mentioning 'Auto call recorder pro apk full cracked'. This suggests the primary intent is to lure users to click the malicious link under the guise of providing cracked software, ultimately leading them to malicious infrastructure.

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=auto+call+recorder+pro+apk+full+cracked In PDF document text
    • http://jugaza.ohsmanuals.com/uploads/1/3/1/3/131379591/bopaluro-fimupagu-bamota-pifote.pdfIn PDF document text
    • http://files.muef.org/uploads/1/3/1/3/131381607/9945851.pdfIn PDF document text
    • http://vobubuduz.tremaynesolar.com/uploads/1/3/0/8/130874218/5cf8bff7b14189b.pdfIn PDF document text
    • http://files.stephaniebien.com/uploads/1/3/1/4/131409909/3ea079681.pdfIn PDF document text
    • http://files.portagepartnersconsulting.com/uploads/1/3/1/4/131453329/zabonibipunage_kozis_sevamimelafu.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/1/0430/4997/5959/files/xizurobuwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/52325197595.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4257/0401/files/9714617324.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/jifenevuxoneboderesox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/80310242394.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/8751603013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/7547/2279/files/bass_guitar_lessons_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4325/8519/files/analysing_qualitative_data_in_psychology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6423/9014/files/dasegofel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3219/0876/files/96507090312.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8629/9815/files/32542600002.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 7

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_off00005f13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F13 5024 bytes
SHA-256: 9b62c213e284c42b9969623d3df68feaa0d514c87c39c01a4254df2740b06df6
font_01_sfnt_off0000703b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x703B 10164 bytes
SHA-256: 55b366d625cc4bf092b4acc296b0dc3ce20d18f0430aa35bb0bc1bffb7d092ce

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