Malicious PDF — malware analysis report

Static analysis result for SHA-256 49e2e34c89f86797…

MALICIOUS

PDF

38.4 KB Created: 2020-08-11 01:09:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cdf465e5595ed48a52d78fac3693b969 SHA-1: 79384f15df84f66351cd2df400e1eca426dbae08 SHA-256: 49e2e34c89f867976fac9f0965ce97888f63213a1f25eb57cd6d9f717173a9be
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is 'https://ttraff.ru/pify?keyword=physical+asset+management+handbook+4th+edition+pdf', which is designed to lead users to further malicious content. The document body, though heavily obfuscated, contains references to the malicious URL, reinforcing the phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=physical+asset+management+handbook+4th+edition+pdf
    • http://dipinetig.juliemaeseele.com/uploads/1/3/1/6/131636648/kenegasatisam.pdf
    • http://duraxazo.theprofessionalorganizerplannerandstager.com/uploads/1/3/1/4/131453574/d571bbfe.pdf
    • http://files.meredithmcginnis.com/uploads/1/3/0/8/130874482/b67dbf00f.pdf
    • http://files.radioafric-aye.com/uploads/1/3/0/8/130874489/lisowijiwiwukoze.pdf
    • https://cdn.shopify.com/s/files/1/0435/6849/6798/files/47112639155.pdf
    • https://cdn.shopify.com/s/files/1/0432/0568/9499/files/javascript_format_number_leading_zero.pdf
    • https://cdn.shopify.com/s/files/1/0440/8714/8709/files/54080333487.pdf
    • https://cdn.shopify.com/s/files/1/0429/2971/7407/files/kazenogujixazikiseg.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83759083977.pdf
    • https://cdn.shopify.com/s/files/1/0432/4897/6027/files/seamless_pipe_size_chart.pdf
    • https://cdn.shopify.com/s/files/1/0433/1231/6584/files/97918103955.pdf
    • https://cdn.shopify.com/s/files/1/0446/6851/8563/files/68607820144.pdf
    • https://cdn.shopify.com/s/files/1/0431/0876/1764/files/ghetto_cowboy_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/6537/6919/files/busulefuwi.pdf
    • https://cdn.shopify.com/s/files/1/0429/6510/6847/files/30088358408.pdf
    • https://cdn.shopify.com/s/files/1/0436/0772/0093/files/51782698925.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005409.bin
68f9db18878b52a6786e86490f56fb32619ffb3c2b5ddcd9fe6985c073f4730d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5409 5868 bytes
font_01_sfnt_off000067e2.bin
2fac9e37766136f3cdb9125ad34f0cd8d808009129b26bd2eeaa3b7876efb7c0
pdf-font-stream PDF embedded font (sfnt) at offset 0x67E2 10580 bytes