Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fc56dd450da5bb7…

MALICIOUS

PDF

60.1 KB Created: 2020-08-12 22:28:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 40eff082328ea6839a0592c46da49a47 SHA-1: 972616ad4d91e391ec47cbef7e519e09bbd6af3c SHA-256: 9fc56dd450da5bb72b74b4933c915932741181f2e2e7d66f1b3959423eb69bf9
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=tipos+de+carga+electrica+pdf'. This indicates the document's primary purpose is to redirect users to potentially harmful content. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning attempt to increase visibility and traffic to malicious sites. No scripts were extracted, and the document body was heavily obfuscated, but the malicious redirector link is a strong indicator of malicious intent.

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=tipos+de+carga+electrica+pdf In PDF document text
    • http://files.sheltiesalberta.com/uploads/1/3/2/6/132695586/potora.pdfIn PDF document text
    • http://files.smokymountainengraving.com/uploads/1/3/0/9/130969960/fedawuf.pdfIn PDF document text
    • http://files.thesummittgroupllc.com/uploads/1/3/0/9/130969498/7773324.pdfIn PDF document text
    • http://files.samrahhairandbeauty.com/uploads/1/3/0/7/130739616/juwebupesom_lapupuluzon_rilanoj.pdfIn PDF document text
    • http://zasutepe.thepaintedvillain.com/uploads/1/3/0/8/130814328/7570620.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/1/0432/4818/9603/files/13136318442.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/7082322425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1185/0918/files/britannicus_rsum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8096/5534/files/arcmap_10_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7141/3160/files/miranid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6490/1270/files/tavolajiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6248/5407/files/85724965018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/47878122177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6718/6079/files/xifuvovajif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1440/3742/files/53079899599.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7872/8345/files/31938863442.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7177/3601/files/nepenimupofajitam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8652/8155/files/19474785022.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000091e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91E1 5272 bytes
SHA-256: 746f8125a1051856f20c6d0c22d15073952fc896e5fd1f25d96fee10b64730d9
font_01_sfnt_off0000a3d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3D7 12664 bytes
SHA-256: 21707d0bde8328a723bd7a69fa08231f4c4ab427742b5efab37b966efa033923
font_02_sfnt_off0000cce5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCE5 16060 bytes
SHA-256: 2d958bd008b8db5b33092f112e99c856adbcc0a100e950d14ff814b784be6357