Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a632bb3504fb421…

MALICIOUS

PDF

31.3 KB Created: 2020-08-18 15:07:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d824d683159e6924671740729e978aea SHA-1: 5d551d07d5f72af1d28df0deac646b7c49450584 SHA-256: 1a632bb3504fb4219bfc5738b061777095c16c85bda860b914ee0e94f01aa75b
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF is identified as an image-only lure designed to trick users into clicking a link. It contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=background+hd+cb'. Additionally, it features a PDF link farm, with many links hosted on cdn.shopify.com, some of which are confirmed benign, but others are unknown. The ML classifier strongly indicates maliciousness.

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.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 2 text block(s), carries a click-outward action, and is only 31 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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=background+hd+cb In PDF document text
    • http://files.randyrosedance.com/uploads/1/3/1/8/131857565/wefunotobojuzur_gawodoruk.pdfIn PDF document text
    • http://files.chassepermanentmakeup.com/uploads/1/3/1/8/131871907/e60d6.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/1/0431/5214/6587/files/lemuregirekepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9776/0668/files/zipufokadaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7400/9753/files/19759038381.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/8804/7256/files/kbs_to_mbs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8439/8244/files/gomugejuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9580/0475/files/wusifilimuto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1666/6786/files/55982471579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1574/0314/files/nevubebuzusasub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5975/7734/files/90948722083.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4742/0066/files/32756944955.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1909/2647/files/mole_ratio_practice_answer_key.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 2

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_off000043c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43C0 5244 bytes
SHA-256: 82939b7cc6e64ab675920d1409c7e5e242372eaa1c3680a425fe5b4f10943314
font_01_sfnt_off00005588.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5588 8080 bytes
SHA-256: 4d5eed67536d7bcddac065d0d340f537cf1863d924b4c37e30b618329191ef47

Open this report in the interactive analyzer, or submit your own file for analysis.