Malicious PDF — malware analysis report

Static analysis result for SHA-256 5858852ca35987e9…

MALICIOUS

PDF

43.4 KB Created: 2020-08-25 15:41:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2ae90eb0901e77b24ef11cd84b5aad51 SHA-1: 62396f230f43a3f856d906f04b723f7b9729b821 SHA-256: 5858852ca35987e92b985a755e7dc7b064de753d185948b6b450251a878f20d5
202 Risk Score

Malware Insights

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

The PDF contains a lure for 'Avs video converter apk for pc' and a call-to-action button. It embeds multiple links, with one identified as a malicious redirector pointing to ttraff.ru. This redirector is likely used to deliver a secondary payload or lead the user to a phishing site. The PDF also contains a link farm, suggesting an attempt to manipulate search engine results or distribute multiple malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=avs+video+converter+apk+for+pc In PDF document text
    • http://fogirizax.mitchadvent.com/uploads/1/3/1/6/131637046/tajujisokifa_gojedomobeke.pdfIn PDF document text
    • http://files.cowgirlcoutureny.com/uploads/1/3/1/4/131437464/8c93845a8ef18.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/1/0431/0974/4789/files/70714874724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1423/4016/files/array_copy_java.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5637/3659/files/reasons_for_the_abolition_of_slave_trade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2906/1014/files/78173833902.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/7254/4917/files/45603752066.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5459/5224/files/book_review_example_high_school.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5742/2229/files/22634791803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2862/8124/files/77904411812.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_off00005d4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D4A 5228 bytes
SHA-256: 3e08e434f1e4cbb417da9a5976485cb79d05d39dd468e1922a46fc74b9d0af04
font_01_sfnt_off00006f26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F26 19372 bytes
SHA-256: 686fdc93124af6a3af1d08da81f99ac7e6c4e68bfa473cda2edd8e515ef61341

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