Malicious PDF — malware analysis report

Static analysis result for SHA-256 6972b7dac3e64ac8…

MALICIOUS

PDF

42.6 KB Created: 2020-07-23 00:41:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-04
MD5: f18e135ff77904e7bacc2e3193325eac SHA-1: 15cc3e94a0b5307b2c1c67d2ee2a66d6f2c8b8a8 SHA-256: 6972b7dac3e64ac84956e3719fd05b805130ecf1d7a454c9966db92e4ec818b8
194 Risk Score

Malware Insights

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

The PDF contains multiple links to a redirector domain, ttraff.com, which is flagged as malicious. The document body, though heavily obfuscated, suggests a lure related to downloading an application. The presence of numerous external PDF links, many hosted on Shopify, further indicates an attempt to create a link farm for SEO manipulation, likely to drive traffic to malicious or phishing sites.

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.com/wb?keyword=pdf%20to%20word%20download%20app In PDF document text
    • http://files.jacksonpaintinginc.com/uploads/1/3/2/8/132816042/ce15f7b5e7dab72.pdfIn PDF document text
    • http://files.apollongu.org/uploads/1/3/0/7/130739233/7094599.pdfIn PDF document text
    • http://files.mindfuldoodles.com/uploads/1/3/0/7/130775922/fiputa.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/1/0430/3863/8241/files/sikatalezunabofefepid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejukimuvili.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4937/7174/files/38328375215.pdfIn PDF document text
    • https://xokiwija.files.wordpress.com/2020/07/25827127160.pdfIn PDF document text
    • https://tinebusomozi983337029.files.wordpress.com/2020/07/97995840334.pdfIn PDF document text
    • https://kavuwuri.files.wordpress.com/2020/06/tagunidovowuzimuvebutak.pdfIn PDF document text
    • https://jipimutewiwo.files.wordpress.com/2020/07/83206565341.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rewosegukedisupagur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9121/3990/files/13619498064.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1416/8480/files/72237651119.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1387/3569/files/66607304364.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5711/8374/files/tasedarag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0316/6372/files/50432120332.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4274/3207/files/kufakifobabine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3366/4408/files/79603135902.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 7

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_off00006a50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A50 4572 bytes
SHA-256: 1101fb3ef29ff06a6d34d73336cd28d79860dece778ff8993659f19e55979840
font_01_sfnt_off000079e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79E8 10388 bytes
SHA-256: f7d794bce2425398053e11509504494fa22d8dd9c299af277230bd748ae94b67

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