Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1b40362be83e3ac…

MALICIOUS

PDF

45.6 KB Created: 2020-08-15 22:43:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3c47b829d6e56636e78f05167d35dd19 SHA-1: 78580d55d672147645e6b770fa12d70569b318fd SHA-256: c1b40362be83e3acf000eb46a818a021d0c13c3ff4c7beae91a4bf9438cd4eb9
194 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as a lure for 'Marvel heroes apk free'. This link, 'https://ttraff.cc/pify?keyword=marvel+heroes+apk+free', is flagged as a malicious redirector. The document also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on cdn.shopify.com, suggesting an attempt to manipulate search engine results or distribute further malicious content. The presence of these elements strongly indicates a phishing or malicious redirection attack.

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=marvel+heroes+apk+free In PDF document text
    • http://files.bullbearkidsbooks.com/uploads/1/3/2/6/132681404/medewesiposade.pdfIn PDF document text
    • http://files.hogtownexperience.com/uploads/1/3/0/8/130874284/fugitumufofobil-lebifiwa-kedizajudum-zuzesigitoxiv.pdfIn PDF document text
    • http://files.reinheitlandscaping.com/uploads/1/3/0/9/130969790/3413828.pdfIn PDF document text
    • http://ribadazow.stabilizationsupportservices.org/uploads/1/3/0/8/130873825/2238355.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4145/4240/files/66929942699.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1593/7948/files/plano_metro_y_cercanias_madrid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4638/7367/files/zovogebejumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3247/6838/files/bujakagamejakid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/felamisakawubibaxejurelok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6174/7605/files/zefesogunuwaxobuzow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5540/7511/files/hit_the_button_meme_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9712/1178/files/edit_free_freeware.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3237/0584/files/sotukorajiwiladu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0516/5216/files/panilodorelekade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/24037059770.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6732/6112/files/periodic_table_image.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/fuxoka.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67C3 4672 bytes
SHA-256: b39bf46792a0404a720094edfeeca3f34430b1aa137cb95235d4c4eeacf8925c
font_01_sfnt_off000077ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77BA 10424 bytes
SHA-256: d66a61733d521a5998663cee8d5e201802c6f31fe004f9708cfe91288c5b6db5
font_02_sfnt_off00009b72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B72 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176