Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa4077a1337eab2f…

MALICIOUS

PDF

39.6 KB Created: 2020-08-02 06:47:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8e96f7354a0b2f75b74af50abfc9565f SHA-1: dd531f46bb92c5fa6dbc4db1420059b91960f401 SHA-256: fa4077a1337eab2f392a0e16bf0c3c2d7ae2ed889207fb9728899ff0f1dfebf7
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to what appears to be a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains the URL for the malicious redirector and several benign-looking PDF links, suggesting a lure to drive traffic to malicious infrastructure. No scripts were extracted from this sample.

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.ru/pify?keyword=love+death+4 In PDF document text
    • http://files.usa-smoking-supply.com/uploads/1/3/1/4/131406518/zaxanuna-migojikoreju-dafogelodop-pirokok.pdfIn PDF document text
    • http://files.nadinedarling.com/uploads/1/3/0/8/130873923/78c312bf.pdfIn PDF document text
    • http://files.atlantikwall-museum.nl/uploads/1/3/0/8/130873921/bavofunopaza.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/1/0434/8638/0189/files/tugiziwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0432/1184/files/sexijubililigakogozosoge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6556/3541/files/ayurvedic_cooking_for_self_healing_usha_lad_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8155/6375/files/mewakomewofoteponeten.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/nonutarelarib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3529/5905/files/88482310881.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dadimutixiwukigojubiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8221/1733/files/php_mysql_class.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/xofefubusu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4744/4903/files/34661607672.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3203/4976/files/xutufamepasasomen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/xuzenuwikabimunorojawite.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_off00005004.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5004 3652 bytes
SHA-256: 62ff1eb0e79c63ed0dae9f0f1176e252e9d58cfe14e64865406b82df59142c04
font_01_sfnt_off00005ce2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CE2 4696 bytes
SHA-256: cc980f399e4ba31491627035dcec344bdeddb3628c5df6a209660bc88b417175
font_02_sfnt_off00006ce3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE3 10396 bytes
SHA-256: b82682341cd519971c024eb15968da4c86431463cd91a5b2ba73de3f0b6d37e8