Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4b6102afe9e4dd6…

MALICIOUS

PDF

128.3 KB Created: 2020-07-24 03:01:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: de8009d2c3c91a858589998e1f13f08d SHA-1: 2cbae569d17369c142265f984c71dff6367a22c6 SHA-256: a4b6102afe9e4dd6dabb2f1f357abcce9c7f52afcb0251dcca0d81bf9ec6d7c2
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a callback phishing lure, prompting users to call a number for urgent matters like billing or security issues. It also links to redirector infrastructure, specifically 'ttraff.com', which is associated with malicious activity. The document's structure and embedded links suggest an attempt to lure victims into a fraudulent interaction, potentially leading to financial loss or credential theft.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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.com/pify?keyword=netacad+final+exam+answers+2016 In PDF document text
    • http://files.cohenbrosracing.com.au/uploads/1/3/0/7/130775537/054f2aded4c27.pdfIn PDF document text
    • http://files.mrbsfinest.com/uploads/1/3/2/3/132303080/wozesepivijiwox.pdfIn PDF document text
    • http://files.lhmspta.com/uploads/1/3/1/0/131070895/7ffb935.pdfIn PDF document text
    • http://files.shopnotjustflowers.com/uploads/1/3/1/4/131406274/gamikuxujil-zajesazof-xifemexaditis-xireduwabejile.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/1/0428/2885/7503/files/zonexale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1104/6561/files/88622437435.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2619/4330/files/wokavopizaxuneliwog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9526/8264/files/kewejelugesesapoja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3699/9842/files/75341897424.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2528/5798/files/45092858049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/logopazunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6643/3429/files/zufabenuxabemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8009/6667/files/47366952140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5042/6787/files/8016522726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2580/0087/files/20016546290.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5026/9849/files/28724239795.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65587220918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4529/8077/files/54777759191.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001bbae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BBAE 5452 bytes
SHA-256: c7181b61b97b5d03befcb967562c1284bd8d2e787b18878803c4df7184aba947
font_01_sfnt_off0001ce35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CE35 11164 bytes
SHA-256: 4bcca3a8879da792a1c901377db1e767c95c979ef8c7238c37c22b85aecbcae8